Mochida Kensuke is arrogant, immature, and incredibly pushy to the extent of bodily harming his classmates when they take away his toys.
Mochida Kensuke is the kid that everyone flocked to, the one that had more absences than attendance in his record, the one that everyone followed with doe-eyed admiration, the very same one who tried to stab through Tsuna's arm with a pencil when he corrects him in the middle of class.
Mochida Kensuke is six-years-old, and he carries the scent of blood.
It takes him by surprise that he couldn't help but blurt "Are you injured?" while Mochida is trying to shove his face into the floor.
Mochida flinches and looks at him with wide, terrified eyes, clearly not having expected the question.
Tsuna smells fear.
Something in him snaps and rears its head against his chest, surging and rising like white heat, like fire, and he suddenly understands the sudden absences, the near constant drive for perfection and the violent response to being corrected. He smiles, gently, kindly, and Mochida must see something else in his expression because he recoils and that fear is directed towards him instead.
The faint sound of chimes, of cracking ice, and he hears a voice that suspiciously sounded like his whisper into his ear, "Prey."
Mochida runs away before Tsuna can so much as speak.
