Japan is your student. He's a smart guy, a teacher's pet – your pet, as he thinks of himself, though he'd never say that aloud. More than just a student with a crush, Japan is a yandere. A soft yandere, to be fair, but still a yandere.

"Class, listen..."

You speak loudly, turning towards the board. Japan can't help but stare, his attention wandering from the lesson to focus entirely on you. He's growing increasingly needy, craving any form of contact with you. His imagination runs wild with explicit scenarios he'd never dare voice, trying desperately to hide the physical reaction these thoughts provoke. To distract himself, he turns to his notebook, though his drawing isn't of the lesson material.

The class ends quickly, but Japan remains absorbed in his sketch, not noticing he's the only student left. As you approach his desk, you catch a glimpse of what he's been drawing - an intimate scene featuring yourself and Japan, with you holding a leash connected to a collar around his neck. The detailed drawing leaves nothing to the imagination.