Hi all! This story is based on the Rugrats: All Grown Up episode TP+KF (Season 5, Episode 3). I thought it would be fun to add more detail to the episode and tell it from the point of view of Tommy and Kimi. There will be multiple chapters, and I will try to release a new one every day. If you like my story I would appreciate it if you could leave a review. This is my first All Grown Up fanfiction and my first fanfiction of any kind published for a few years, so do be kind.

Without further ado, let the story commence! I hope you like it :)

Chapter One: Costumes!

Tommy's POV

I was looking forward to Halloween. It's always a fun time of year to spend with friends, and we were getting older now, so we probably didn't have many Halloweens left to go trick or treating as a group. In particular, I was looking forward to trick or treating with my best friend, Chuckie Finster. We have been best friends since we were babies. I have lots of other good friends – Chuckie's step-sister Kimi and the twins Phil and Lil were coming trick and treating with us – but none of them shared as close a bond as I did with Chuckie, and I could never see myself being closer with any of them than I am with Chuckie.

Actually… maybe one of them… but that would be a different kind of best friend I guess. Anyway, me and Chuckie had decided to go trick or treating in a joint costume – that's how much we were best friends! The five of us were in Chuckie's garage sorting through some old stuff trying to find good costumes. It was a wet day outside, but I didn't mind because it added to the Halloween atmosphere. Phil and Lil seemed to have found some good stuff. Lil was dressed up as a genie, and Phil was smoothing out the sleeves of an ugly yellow jacket.

Lil was looking in a funny way at her brother. "What are you supposed to be, a car salesman?"

Phil smirked. "No, I'm an international spy and ladies man!" he said, pulling off a dramatic pose.

Honestly, I thought Lil was closer to the truth. I would have commented but then I noticed a large green sheet. That could be a perfect costume for me and Chuckie!

"I got it, Chuckie, I have our Halloween costume. Lizardo, the two-headed, three-legged, radioactive dino monster!"

I draped the sheet round my body and over my head. It was good!

"Now all we need is someone who can sew," I said.

Chuckie looked confident. "I might be able to manage a stitch or two."

That was weird, he's never mentioned that before. Isn't it weird how you can be best friends for so long, and yet still find out new stuff about them?

"You sew?"

He must have realised I thought it was a bit weird because he looked very embarrassed. "No."

At that moment Dil walked in the room. My brother is a character! He decided that he wasn't going to go trick or treating on Halloween, but on the day before. Interesting scheme for sure. It does mean he won't be joining us, but that's not so bad. I like our group of friends. Chuckie, Phil, Lil… and Kimi…

Sorry, I got lost in thought! I refocused on the conversation. Chuckie seemed to be worried about a group of fourteen year olds. These guys were known for taking candy from younger kids on Halloween. Thankfully we'd never met them, but I'd heard stories. It was time to fulfil my role as group leader and reassure everyone – especially Chuckie!

"Don't worry about them, guys. As long as we go in a big group we'll be perfectly safe. This is gonna be the best Halloween ever!"

I did my secret hand shake with Chuckie. We were gonna be such a good Lizardo! But when I turned my head the others had wandered off. Lil seemed to have found something behind a box.

"Check this out," she said. She pulled back a box to reveal a carving in the wall: a heart with an arrow through it. Inside the arrow were two initials: TP + KF. That could only mean one thing…

Kimi's POV

Oh no, why did that get found? I knew the garage was a bad place to carve that. I must admit, I'd been a bit nervous when we were looking around in our garage because I knew that was there and I didn't want anyone to find it. I think that's why I'd been so quiet up until this point, though thankfully no-one seemed to notice. What they did notice, however, was my carving. Chuckie was the first to comment and he seemed surprised.

"TP and KF? Tommy Pickles and Kimi Finster?"

My brother glared at his best friend. This wasn't good. So yeah, I'm Kimi and Chuckie is my brother. Well, he's technically my step-brother, but we've lived together since we were babies so I barely remember what life was like without him. I love having Chuckie as a brother, but like all siblings we do rub each other up the wrong way at times. One of Chuckie's most annoying characteristics was to be over protective of me, especially when it comes to boys. I get he means well, but it's not like I'm helpless. I'm only a year younger and, honestly, a whole lot braver than him so I don't need his protection – if anything, he'd benefit from mine!

I remember last year he got funny when I made friends with Z. Z was a punk with spiky green hair and there were all these rumours about him, but he was a really nice guy who did lots of charity work. But Chuckie tried to stop me hanging out with him – he just didn't understand!

This one could be worse though. With Z there was no romantic interest – I hadn't really thought much about boys at that point – but with this one there was. Worse still, I was crushing on Tommy, Chuckie's best and oldest friend. I was always a little afraid of how Chuckie would respond when I got my first boyfriend, but it could be worse if it's Tommy. You see, Chuckie believes in all this nonsense about how it's not okay for your best friend to date your sister. It's so dumb! It's not like I choose who I crush on.

It's hard for me really because I've never felt this way about someone before. I don't really know how to handle my feelings, or why I like Tommy. I mean, I've known him for a long time and I guess he is kind of handsome. I like his spiky purple hair. Maybe though it's because he's just so brave. He's always been a leader in our group and I know I'm adventurous, and Tommy is the only one who is as adventurous as me, if not more so. I guess we share that trait.

Chuckie was still glaring at Tommy. "Did you write that Tommy?"

I tried to keep quiet and not draw attention to myself – I didn't want to get found out. Yet, I'll admit I was curious to know what Tommy thought.

Tommy looked shocked. "Of course I didn't! Why would I be interested in Kimi?"

Ouch! That hurt. Way to let me down easy, Tommy. I was upset but I tried not to let it show. Thankfully that wasn't too hard as I was as annoyed as I was upset – that was kind of rude of Tommy after all.

"Hello, I'm in the room." I mustered as much sass as I could and scowled at Tommy. He didn't seem phased.

"Please, Kimi, tell your brother there's no way I'd be interested in you," he grinned.

Charming. Why am I crushing on you again? I wasn't really sure what to do, but I was annoyed. I decided just to play along and looked grumpily at Chuckie.

"There's no way he'd be interested in me," I said in a monotone voice. Tommy smiled – apparently, I seemed to have proved his point, but Chuckie wasn't convinced.

"Well, someone had to write it."

Shoot, he was going to come to me now. I would get found out!

Before I could say anything, Tommy spoke. "Could have been anyone. Angelica could have done it to burn us."

That was a good explanation, actually, and it put Tommy back in my good books (well, a bit). I tried to keep quiet, and hoped Chuckie would buy it. He looked thoughtful, but then laughed.

"You're right. What was I thinking?"

Phew, that was a bullet dodged. Glad that's over. Chuckie would have got really mad if he realised I liked Tommy.

Thanks for reading, and I hope you enjoyed the first chapter! Reviews are very much appreciated, and I will try to take any feedback on board. Tomorrow's chapter will be on the bowling alley scene - see you then I hope!