Author's Note: Hey guys. So, this is the sequel to 'Invasion: Love of Yesterday'. If you haven't read it, please go check it out before you read this story. This story is going to be a very important one for Oliver and Kara's friendship. I'm still not sure if I should pair them up yet because it is still so soon in their relationship, but there for sure will still be plenty of interactions between them, which will strengthen their bond immensely. Please leave a review for this first chapter, and I hope you all enjoy it! Cheers to another adventure!

Oliver Queen stood by the window in his office in City Hall, overlooking the city he had called home for all 30 years of his life. He contemplated all that he had done, and was still doing to try save the city. Sometimes, when he arrived at his office in the early hours of the morning to review hundreds of documents piled on his desk, he wondered why the hell was he doing this, but he always remembered quickly. Being The Arrow, or the Green Arrow wasn't enough anymore. He had to be someone else. Sometimes, the city needed the mayor more than the Green Arrow.

Without the help of Quentin, and even Thea, he probably would have rescinded his position as mayor very quickly. He had never cared for politics once his entire life. He'd voted in a couple of elections before being stranded on Lian Yu, but to him, the outcome didn't matter anyway. Up until him endorsing his mother for mayor during the 2014 elections, the greatest extent to which he had been involved in politics was his involvement with the Bratva and Constantine Kovar. That said a lot about his ability to control and keep an entire city in order from an office. Luckily, Quentin had been involved with City Council for years, and had truly been in a tremendous aid in helping Oliver manage his two lives.

He walked over to his desk and sat down on his chair, letting a deep breath out. Whether he wanted to admit it or not, Prometheus was truly inside his head now. The fact that Prometheus knew about The List was concerning enough, but he had now brought Laurel into this. Sure, she's a doppelganger, but that didn't make it better at all. This was the second time in just over a month that a doppelganger of someone he loved who had died had showed up. It was subconsciously taking a mental toll on him. Constantly being reminded of his failures to protect the people he loved was starting to add weight to his guilt.

He ignored all of the files scattered on his desk, looking towards the picture frame on his left. He studied every inch of the photo. Himself, Tommy, Laurel and Kara, all at the Starling City Park. Laurel and Kara both piggybacking on Tommy and Oliver respectively, all four of them laughing and smiling in the picture. With everything that's happened now, Oliver could look back on that photo and think of it as simpler times. His crusade seemed, not easier, but more straightforward. He could take down everybody on The List, and then he'd be done. No Slade Wilson, no League of Assassins or metahumans and aliens to worry about. Only three people knew his secret at the time that photo was taken, and now? Too many for Oliver to count. A moment of realisation hit Oliver while he was studying the photo: He was the only one still alive. Everyone else in that photo had left this world.

Before he could dwell any deeper into his guilt, the door to his office opened, interrupting his thought-stream.

"Mr Queen?" The door opened slightly and his secretary, Cass, popped her head through, "You have a visitor."

"I don't recall seeing anybody on my schedule for this time" replied Oliver.

"Yes, she didn't make an appointment, but she says that she is a friend and that you will gladly see her. A Ms Danvers"

"Danvers?" Oliver's eyes and eyebrows flared up at the surprise of hearing her name, "Kara Danvers?"

"Yes."

"Uhh, yeah, yeah, let her through" said Oliver, slightly confused, but pleased nonetheless. He was hopeful that she was seeing him for an issue that didn't require him to save the world once again. Then again, she probably would have called Barry to help her with that, and judging by the fact that Barry hadn't sped into his office, he deduced that this issue wasn't one that was world-ending. He waited for no more than 3 seconds before Kara Danvers of Earth-38 stepped through the office door. She was wearing a long-sleeve floral shirt and a black knee-length skirt with her hair tied in a ponytail.

"Hi Oliver" she said warmly.

"Kara" replied Oliver as he stood up to greet her, "It's good to see you again" he said as he offered a hand to Kara. She was about to hug him, but the extension of his hand served a reminder to what she already knew… Oliver Queen was not much of a hugger. Although, she was sure he'd get there someday… Hopefully. She shook his hand before he spoke up once again.

"Now, what could have possibly gone wrong that Supergirl needs my help?" he joked.

"Oh no, nothing has gone wrong. Well, not yet at least." That last statement by Kara made Oliver raise his eyebrow in unsureness.

"So, what can I help you with?" asked Oliver.

"Well, it's a long story. Actually, not that long, but I need time to explain everything. Do you have time?"

"Yeah, my schedule is clear for the next hour."

"Ok, so, why don't we talk about it over lunch? I'm really starving."

Oliver's first instinct was to reject her offer for lunch. Not because he wouldn't mind going out with her, but she had a dead doppelganger on this Earth and if the paparazzi caught him having lunch with her or if somebody recognised her, the results could be disastrous. Although, he realised that it had been nearly 4 years since the passing of her counterpart, and any paparazzi in the vicinity could be dealt with by his security detail. Plus, he really needed to get out of his office. He'd been in there for the past 5 hours.

"Ok, sure" said Oliver.

"Great. Oh, do you by any chance have Big Belly Burger on this Earth?" she asked curiously.

Oliver stared at her for a second, before replying with nothing more than a wide smile as he headed towards the door.

Before he and Kara got off the car, Oliver asked his driver and bodyguard to sweep the area inside and around Big Belly Burger to make sure there were no paparazzi around. Earth-1 Kara didn't wear glasses like Earth-38 Kara, so he was confident she probably wouldn't be recognised. Oliver still being pictured with a young woman was sure to get the tabloids talking. Besides, the paparazzi rarely ever lurked in the Glades, but he had to be sure. After the area was secure, they entered Big Belly Burger. Oliver was naturally greeted by several people in the joint, all recognising him as the Mayor. He and Kara picked the seats near a window that looked out into a small alleyway, seats far enough away from anyone else to prevent any eavesdropping. It didn't take them long to decide what to order.

"I will have a Belly Buster combo" said Oliver to the waitress.

"I will have a Cheesemeister Deluxe and a large portion of Chilli Cheese Fries with jalapenos" said Kara.

"Will that be all?" asked the waitress, with both Kara and Oliver nodding, "You'll have your food shortly, Mr Mayor" said the waitress before she walked off. Oliver instinctively studied Kara's entire demeanour. She was nervous, as one would expect. He thought that she was perhaps still a bit intimidated even though she was way more powerful than him. She was definitely shy.

"You know, Diggle once told me that chilli cheese fries and jalapenos is a cry for help. So tell me, what do you need help with?" said Oliver.

"There's this guy on my Earth, his name is Mon-El. He's from Daxam, a neighbouring planet to mine, Krypton. Last year, his pod crashed in National City. He's a good guy at heart, even though he has trouble showing that. It's taken him some time, but he's decided to at least try to become a hero. I've started training him but it's not entirely my specialty. I'd like for you, if possible, to come to my Earth for a while and help train him."

"What powers does he have?"

"He's quite strong and fast, but not as much as me. He doesn't have heat vision, and he can't fly, but he's pretty much…"

"Pretty much a slightly less effective version of you" said Oliver bluntly.

"Well, I guess you could put it that way."

"Kara, if he has those attributes, then why do you need me to train him?"

"I've personally seen what a good job you did with Barry, and he has superspeed. Also, it's not just about the physical training. He is a… hothead to say the least. He's a bit stubborn. I can help him with controlling his powers, since you probably don't have any experience with that…" Oliver cheekily raised his eyebrows and smirked, causing Kara's eyes to flare open out of surprise and curiosity.

"My sister's boyfriend got injected with a serum once that made him extremely strong with an uncontrollable rage. I helped him the best that I could."

"How is he now?"

"He's all cured."

"Oh, that's good to hear. Well, you can help in any way that you can. If you are coming, of course."

"Well, I said that I'd be there for you if you ever needed my help. I do intend on keeping that promise, but of course with my duties as Mayor, I'm going to have to sort some things out before I agree to do anything."

"Yeah, sure, of course. You're not obligated to help me, you know, if you have other commitments or…"

"Kara… I am obligated to help my friends. I'm sure I will be able to help you."

"Thanks. There's actually two guys that need training, but Mon-El is the only one that's willing to accept help."

A couple of minutes later, their food arrived. Oliver could eat big, despite having basically trained himself to go without food for days when he was on the island. However, he was still shocked at how Kara dug into her burger and fries. She didn't eat like a savage, she was still very eloquent, but she could for sure eat anybody under the table. Perks of Kryptonian physiology. He assumed that she probably didn't need food as much as a regular human, or even at all, which made how much she ate even more impressive to him.

"So, while we're here, why don't you tell me more about yourself?" said Oliver. He was curious to get to know Kara. On the surface, she had the same values and personality as her Earth-1 counterpart, but she came from an entirely different background and as a person, was shaped by totally different experiences. She had already told him about Krypton and her family on Earth, but there were still some things that he'd like to know.

"What do you want to know?" she asked

"The S on your chest. Ironically, something tells me that it doesn't stand for Supergirl?"

"You're right. It's the emblem for The House of El, our family crest."

"Your family?"

"It's only my cousin Clark and I left now, unfortunately."

"Sorry to hear that."

"No, no it's fine. I have an Earth family, you know."

"Yeah, I heard at the hanger. Alex. Your sister right?"

"Yeah, she's my older sister. My Earth birthday is actually coming up pretty soon."

"Oh, that's great. You spending it with Alex, or perhaps someone else?"

"Hmm?"

"You know, a significant other", Oliver thought he might be probing too personal with this question, but he'd already deciphered that this Mon-El guy was something more than someone Kara simply needed help training. He was just intrigued to see how she answered this question. After what happened with Laurel, Oliver totally rejected the idea of a partner until he was done with his crusade. Kara clearly would not do such.

"No, not at all" she replied, with a hint of uncertainty in her voice, "Well… there is this one guy. It's complicated. We come from such different places and backgrounds that I really don't think we're compatible."

"Are you saying that to convince me, or to convince yourself?" Kara simply stared wide-eyed back at Oliver. His ability to dissect a person was almost a superpower on its own. That, or she was just terrible at lying. Oliver picked up on her reaction almost immediately, and thought that maybe he had crossed the line.

"I'm sorry, I shouldn't have said that. I crossed the line" he apologised, but she was quick to let him know that she wasn't offended.

"No, it's ok. It's just…He and I kissed, but he was not entirely sober in the moment…"

"He was drunk?"

"You could say that. When he came to, he pretended to have no recollection of what happened because he also thinks we're not compatible. So, yeah, definitely in a weird spot at the moment."

"Well, I have always had trouble when it came to balancing my… 'work' life and personal life, but from what I can tell, you seem to be good at that. So… go for it."

"Oliver Queen is a love doctor now?" joked Kara.

"No…" replied Oliver sternly, "I've just made a lot of mistakes in my life, and I try my best to make sure others don't make those same mistakes."

"That's what friends are for right?" said Kara jovially, with Oliver replying with a nod. He glanced at his watch and realised that their time was nearly up. He paid the bill and they headed back to City Hall with no hassles.

"Hey Oliver, we got to take a look at this affordable housing legislat…" he spoke as he stood up and turned around, his words being cut short at the surprise of seeing Kara with Oliver, "Kara?"

"Hi Mr Lance" she replied cheerfully.

"It's so good to see you again" as he gave her a hug, "What are you doing here? Please don't tell me there's another alien invasion? Does the world need saving again?"

"Oh no, not at all Mr Lance. I just came here to ask a favour of Oliver."

"Oh ok, no problem. And please, call me Quentin" he said lastly.

"So, Kara, I am going to need at least a day to settle my affairs, and then I will get back to you" said Oliver.

"Ok, I'll just go back to my Earth, and then come back."

"Sounds good. I'll see you soon then" said Oliver as he extended his hand once again. This time, she was expecting it and shook it without surprise or hesitation. She greeted Quentin as well before using the extrapolator Cisco gave her to open a breach to Earth-38 and step through. Oliver felt amused at the bewildered face of Quentin, who was still coming to grips with the concept of interdimensional breaches. To be fair to Quentin, so was Oliver himself.

"Well, do you mind telling me what that was about?" asked Quentin.

"She needs help training a friend on her Earth" replied Oliver succinctly.

"You going?"

"I did promise her that if she ever needed my help, I'd be there. The problem is that I'll be gone for at least a week."

"Well, I think you should go."

"Quentin, I can't afford to leave now."

"Oliver, you got a whole team now at the Bunker that can hold the fort, and Thea and I have everything under control here at City Hall. With everything that's been going on with Prometheus, I think it'll do you some good to get out of here for a little while. A change of scenery, you know. Being the Mayor or the Green Arrow is hard enough, I couldn't imagine doing both. Take this break, you've earned it."

Oliver took a deep breath before replying to Quentin, who was telling the truth. Being the Mayor and the Green Arrow was taking a toll on him, and Prometheus was making things very personal. He'd thought that Slade would have been the most personal foe he'd ever encounter, but Prometheus was slowly starting to edge Slade in that regard. Perhaps it would do him some good to go to a place where he wasn't burdened at all.

"If I go, we're going to need to come up with a reason for why I'll be gone."

"Leave that to me and Thea. I've heard Councilwoman Pollard is into spiritual retreats and what not, so I'll see if that story rolls."

"Thank you."

"Oh, don't worry about it. Let's look at this legislation, alright?" replied Quentin as he sat down and opened the file he was holding in his hand.

"I heard Kara was here" said Thea as she walked into Oliver's office. He sat by his desk, still contemplating whether this was the right time for him to go or not.

"Yeah, she was" replied Oliver.

"What did she want?" asked Thea.

"She needs my help. She has a friend on her Earth that needs training."

"Oh. You should probably go."

"Quentin said that. I'm still having some doubts."

"Why?"

"The city needs me, Thea."

"Ollie, the city ALWAYS needs you. You spend so much time taking care of the city that you forget that you need to take care of yourself. Don't you think it'll be good for you to go to a place, where you're not burdened as the mayor, or the Green Arrow? A place where you can just be… Oliver Queen. And Kara is literally and figuratively a bundle of light and joy. Being around her could be good for you."

"When did you become the queen of wisdom and life advice?" asked Oliver playfully.

"I've always been a queen… No pun intended" replied Thea, winking at Oliver before turning around and leaving the office.