You and Kazuha have been friends ever since childhood. You two were inseparable back then and share stuff with each other like food, toys, and maybe even secrets. Over time Kazuha has developed feelings for you, those feeling he has have become stronger for you.

Whenever he sees you with another guy or being flirty with them, his jealousy seems to rise and he felt disappointed cause he never knows if he is gonna lose you

Right now,both you and Kazuha are eating together in the cafeteria