Note: Unedited. No Beta. Grammatical mistakes. Slow update. AU.

Collision

09:

The rest of the day inside the Sawada house is tense and only his mom had a huge smile on her face.

Tsuna still couldn't understand how his mom could love a man like his father. Because there are no other reason why his mom always look so happy when his father is in the picture.

The reason why he doesn't discourage his mom from her clear affections to his father is because he doesn't like dictating to others what they should feel. Everyone has the right to feel and decide on their own and his mom's love for his father seem so huge that he didn't dare interfere no matter how much he dislikes the man.

Second, his mom has a mind of her own. Even if she sometimes is a little... out of touch with the world, he knows his mom's mind is sharp. She can think and he is pretty sure she already weighed everything before deciding to still be the same with his father despite Tsuna not really seeing any instances of it. Also, he will always respect her decision no matter how much he disagrees with it.

And the most important thing for him is... no matter how much of a disappointment his father is as far as he had experienced, he could see how his affection to his mom is genuine. He still didn't know if his father really loves his mom as a husband should to his wife or just sees her as a dear friend. Nonetheless, he loves her in his own way and he can respect that especially since his mom accepts it.

Besides, he only knew how his father, Iemitsu acts like a carefree old man around his mom when he is around. He didn't know how he is behind close doors and only the two of them in each other's presence.

That didn't change the fact that he doesn't like him around though. Tsuna actually prefers for Iemitsu to be out on his various busy 'businesses' than staying for a couple of days, no matter how awful that sounds and how guilty it made him feel for the inevitable sadness of his mom when he leaves.

But then again, he shouldn't really allow his emotions to cloud his judgement. He had already told himself along with the rest of Thallium and is determined to be the source of the government's information with regards to the deeper aspects of the mafia. Iemitsu, as the leader of this CEDEF group will be an excellent source of information, and it's easier to penetrate his defenses than Reborn simply because, no matter their differences, he is his father.

It leaves a bad taste in his mouth using his own father like that but he had to get over it. He wasn't the only one using a family member in this family anyway.

Iemitsu does too. He is the one who landed him in this predicament after all, of that he is 100% certain.

Just based on that information alone, he can determine that his relationship with the man that is supposed to be his father is abysmal.

He quietly ate before softly telling his mom he is tired and going up to his room.

He couldn't stand being downstairs as he couldn't relax. He not only has to be on guard with his own father, he also has to watch out for that mini hitman's actions.

He isn't naive to think they are just relaxing. He is pretty sure they are biding their time. For what, he didn't know.

He took his black laptop from the bag he brought from Takeshi's home when he left it last time and had it subtly hidden in a secret compartment of his floor under his bed and stuffed his black cellphone inside his pocket.

There is a risk of his laptop being found out but it currently is only at 30%, and that is even still uncertain. He normally would not have mattered about the percentage risk as he doesn't do anything unless he is absolutely sure of his movements, with the risk being there as a part of his contingency plans.

If the risk is more than 20% without it having any use to him, he would have discarded a plan like that. But he needed something from this laptop and he needed it here inside his room to modify the device again.

Takeshi's place isn't ideal for modification as the entire property is ridled with rain-flame ward that it effectively interferes with flame modification he planned to do for the device. But then again, he won't be able to concentrate in this place being that it now turned into a semi-hostile place so it's probably for the best not to do anything in the house.

He'll just wait for Kyoya then, even though he knew it'll probably take a couple of days before his friend comes back with an almost calm disposition. As always when he is called by his family.

He lay down on his bed and gave a huge sigh. It's starting. Infiltration is happening right now. There is no question of them succeeding. When Thallium moves, they won't fall. He wonders though how long they'll have to do this.

They aren't an adult yet but they already have a huge responsibility and task upon their shoulders than even most adults.

His right eye suddenly twitched.

His eyes narrowed in confusion before he sat back up on his bed. Something isn't right. There is a faint hint of alarm at the back of his head and he didn't know why. He just knew that it's telling him something is wrong. It was soft, almost negligible. Compared to the overwhelming warning he had felt earlier with the arrival of his father and his supposed tutor, this could even be overlooked our dismissed as a sort of residual from that sudden alarm. It might not even be detected due to how miniscule it is, almost like it was blending in the surroundings.

But he is different. He has always been the type of person who listens to his instincts, no matter how seemingly absurd or small it is. He had never neglected to take note his strange, powerful ability of detection, not after everything that had happened before when he did not listen.

He carefully looked around his room, taking in everything and looking to see if something would trigger his suspicion.

There was nothing out of the ordinary.

Frowning, he stood up and turned the lights off, bathing the entire room in darkness. Alert, he looked around again carefully. He could see a soft, orange light coming out of his body and illuminating the room for a bit. He instinctively knew his flame probably activated again. Not minding that as it would, no doubt, help him in his search, he left it be.

Out of the corner of his eye, there is a faint glint. Normally, he would have dismissed it as something normal. After all, he has a lot of things that glint when hit by the light. But the situation is different.

Not only is it in the dark, the light it had is different. Not to mention the fact that his instinct seemed to be pinpointing his unease in that glint.

He walked towards it with sure steps and carefully felt around, until his hand hit something. He took a careful deep breath, not taking his hand on the object he touched before taking the alarm clock and accurately throwing the device towards the switch of the light of the room.

With lighting now back in the room, he looked at the object he found.

It was a tiny object with a lens.

A tiny camera.

"Tsu-kun, I heard a crash! Everything fine?" He heard his mom call. With fury erupting inside him, he calmly answered.

"Just a minute mom!"

He furiously pulled the camera out of its place before looking around again. He would take out all of these freaking cameras right now.

. . . . .

Nana feels so happy this day. Her husband came back home! Although she knew that this is probably just a visit, it's still fine, better even. It's been so long since she'd seen Iemitsu and her heart feels the pain of separation.

She knows he's abroad for the family, that he had to stay away long for them, but she couldn't help feeling lonely.

She's a wide who rarely sees her husband. It's saddening. She had Tsu-kun though, the son she born with difficulty and lives with all her heart. Someone she would never let down and is her whole world.

If her love for Iemitsu is everlasting, her love for Tsuna is encompassing. Tsuna's place in her heart will always be number one.

It's saddening though to see the two most important people in her whole world not getting along.

She knows Tsuna still has reservations with his father. She can see it clearly with her eyes. Iemitsu in turn look as if he didn't know how to handle his own son.

If only they could get along, she'd be the happiest mother and wife in the whole world.

She served another coffee to Reborn-chan just the way he likes it - It's so cute how he tries to be a cool adult, and his lisp is adorable - and sitting in front of Iemitsu waiting for Tsu-kun to get down just as her son implied.

She's worried about that crash. She hopes the experiment Tsu-kun is doing isn't that harmful. She didn't want to see another fire again. It's just took dangerous around Tsu-kun.

One of these days, I'll hire workers to make another room for Tsu-kun to conduct his experiments, with all the necessary protections, she thought to herself. I hope he'll be safer there...

Hearing a soft, almost light footsteps on the stairs, Nana frowned a little.

Out of all the years she took care of her son, she knows almost everything about him. That manner of walking only happens rarely. It usually means Tsuna is furious, and more than anything is upset.

Concerned, she stood up and walked towards her son, temporarily leaving her husband and guest sitting on the table.

"Tsu-kun, what's wrong? Did something happen? You're not hurt, are you?" She greeted for a bit before posting the soft hair of her son and looking at his body carefully. The black expression on his face melted for a bit as he smiled at her.

"I'm not hurt mom,"

Not hurt... Something happened. Tsu-kun usually tells me he's fine if nothing really is the matter. Is this about that crash? Did his experiment fail? But Tsu-kun doesn't get angry over his failure. He sulks and mope and get frustrated, not angry...

She felt her hand being held by warm hands. She looked at her hand being held by her son before looking at her face.

"I'm not hurt mom," he repeated before walked forward while still holding her hand. She followed until they stopped in the dining room where her husband and Reborn-chan sat.

Tsu-kun let her hand go gently before digging her hand inside his pocket. He then took something out and let it fall on the table.

"Who put this in my room?"

Nana looked at the tiny objects. She hadn't seen anything like that before.

"What's that?"

"A camera mom. Someone put these cameras all over my room," she could heart the calm fury in her son's voice.

"Camera..." Her eyes widened. She looked up at the two people on the table.

Iemitsu was frozen in his seat while Reborn carefully put the cup he has on his hands on the table. In her eyes, their movements screamed suspicious.

"You put cameras inside my son's room?" She asked in disbelief.

"No! I didn't!" Iemitsu spoke as if he had been lit by fire.

"I did not put any monitoring device in your son's room Maman," Reborn answered.

Monitoring device...? That is the purpose of the camera? Nana wasn't listening to their answers. Her mind worked rapidly, as if the clogs and rusts had been cleared away.

"You plan on watching my son 24/7, invading his privacy and not leaving him in peace?" Her disbelief changed into fury. He pinned the two of them with a look. Iemitsu looked as if he'd seen something out of the ordinary, his eyes widening by the second. Reborn stood up on the chair and looking at her.

They didn't say anything though, not a denial and certainly not an apology, making her fury skyrocket.

It's not enough that they once destroyed her loving son, they start doing things like invading his privacy? Who gave them the right?!

She remembered how Tsu-kun had been after her husband and that boss of his left when her son was still three years old. His eyes turned dull. He did not speak, played like he usually do or even gave her a smile. He just went through the motions like it's been programmed in him. Waking up, bathing, eating, going to school, back to the house and repeating the process.

He was like a body who lost it's soul, alive, moving but not having any motivations at all. Only following his routine and instinct. His warm son replaced by a cold child. It forced her to see things clearly about her son, without any filters.

It broke her heart and with it, her resolution, determination and protectiveness came. And now that things are finally okay, that everything turned out alright despite those painful years, this happens?!

And with Iemitsu involved again?!

She had once forgiven her husband even if he did not even asked for it since she figured he probably didn't know. It was probably a result of what that boss of his had done to her son. It's not as if she told what had happened and everything she and Tsu-kun went through to him anyway since she did not want to burden her husband anymore.

But with this... she didn't think it wise to leave this matter alone.

No matter how much she loves Iemitsu, at this moment, she has to prioritize her son. Her beloved son who has already suffered.

"Get out," she said, voice almost calm. At the corner of her eye, she saw Tsuna abruptly looking at her like he didn't quite know what to say to that.

"N-Nana..." she could see Iemitsu's eyes widened in shock as he stared at her. She felt a pang of pain in her heart but she has to do this. Whether Iemitsu has done it or not, or if he knows or not doesn't matter. She has to make a statement.

Tsuna is now and shall be her top priority.

She saw how Reborn-chan looked at her in surprise before he bowed and hopped towards the floor before leaving. He looked back once at them before finally going out without even saying anything.

She's torn as to whether or not to make Reborn-chan leave. It's really not safe outside for him, but then figured that since his employer is her husband and they came together, she's sure he'll take care of the child so she did nt say anything. She stared at Iemitsu.

"I... You can't-" Iemitsu didn't even manage to finish his sentence before she interrupted, her anger being stoked once again.

"What do you mean I can't Mitsu?" she asked in a hard voice, looking at him intently. He stared at her for a while before deflating and walking slowly out of the house.

"I'll... come tomorrow," he said instead before finally leaving.

There was silence in the room.

Her heart feels heavy.

TBC.

A/N:

Okay, Nana's POV is here. And a glimpse of what life was like for them when Tsuna's flame was sealed. Further information will be seen as chapter goes.

This was a hard-earned chapter coz I had difficulty writing and finishing this chapter. I hoped you liked this.