It wasn't hard to notice how many times Sanzu was staring at you during classes, and how nervous he got when you were with him, touching him, smiling at him and more. He would always make sure to keep you under his gaze, watching you in the hallways, outside, even in the male bathroom. Disturbing? Very. But you'd never guess how in love he actually is with you, hiding his true thoughts under the stoic facade and the black mask that could never let other see rhe soft smile appearing on his face whenever he was in your presence.

No need to say he was enraged when you were assigned to do the school project with another girl. Sanzu was jealous. Upset. He asked the teacher to make him your project partner. But he was ignored.

And now, as you leave school building, you feel someone's hand on your shoulder. "Hey, uh, wanna study together?" He says hesitantly, trying to act calm. What's that on his shirt? A blood stain?