Hello! This is my first story here and though I've written some stories in other website as well, this is my first try in doing a fanfiction. So, I'll hope you'll enjoy this as much I enjoy writing this. I'm a die-hard fan of R27 because they just look so cute together hahaha

I don't own Katekyo Hitman Reborn and it's characters.

Reborn don't know when it started. Nor how it happened… and why? He's the greatest hitman. Hell, he's considered the strongest arcobaleno. Ex-arcobaleno. His mind helpfully reminded. His student broke the curse years ago. Shouting at him and demanding him to just step back because there's no way he's allowing Reborn to die and leave him. Because Reborn needs to be responsible with all the mess he subjected the brunet to. And Reborn is HIS tutor and nothing- not even the curse, can take Reborn away from him, damnit. And there it is again, the fluttering feeling in his stomach that he hates so much because he's not suppose feel this especially towards Tsuna. Dame-Tsuna is his student and he's the Decimo's tutor. He's only job is to teach the brunet the way of the mafia, teach him to fight and defend and to stand on his own. But at the same time, he feels warm- so so warm he doesn't want this feeling to go away. He feels at home.

Home. He never had one. He has a lot of houses, apartment, condos- name it, he have them. He's resourceful. He needs to, he's not the greatest hitman for nothing. But he never felt at home. But Tsuna is home. He's the cold in summer, the heat in winter. And none of the four lovers he had makes him feel this way. He never felt emotions in this degree. Of wanting something so, so much. To crave, to hunger to want to possess someone and mark them, to tell everyone that Tsuna belongs to him and only him.

His. Tsuna is his. His. His. His. Only his.

It makes him dizzy, this feeling. It makes him itch and twitch. It makes him want to shoot everyone that dare to look at what belongs to him with anything akin to affection, of want, of lust. And it doesn't help that Tsuna grows to be beautiful, graceful. loving, and accepting that he draws people to him like moth to fire.

Tsuna. Tsuna. Tsuna.

His every thought is filled with one Tsunayoshi Sawada. Damn-it. He's really screwed.

Dame-Tsuna...

Please excuse the grammatical errors and typos if there are any. English is not my first language so there might be some errors and whatnot there.