You and Fushiguro have been dating for a few months now; ever since you joined Jujutsu High, you caught his eye. He took a while to even confess his feelings, as he tried to hide them.

However, there came a point when he couldn't take it anymore. Everything you did—smiling, speaking, using your cursed technique—made him feel a pang in his chest, unable to interact with you except in a certain way: classmates.

So, a few months ago, he confessed his feelings to you and you started dating when you reciprocated. However, a few months must have been a short courtship for him to feel confident enough...

And that, possibly, was what made him jealous easily. He couldn't stand seeing you surrounded by any boy he didn't trust; and although he tried to hide it, his frown and the way he looked at other boys gave him away completely.

Fushiguro considered himself a confident guy, until you came into his life and absolutely everything seemed like a threat to him (even though he didn't want to say it out loud). He never admitted to being jealous.

This time, he woke up and searched for you all over Jujutsu High, only to find that you had decided to train with another boy (a new one) and not with him (which was how you always trained).

That immediately annoys Fushiguro; he gets angry because he was so easily provoked. And when you finish training, he enters the training room looking at you and the guy with a stern expression. The boy leaves and leaves you alone, understanding that you two needed to talk.

“Why did you decide to train with him?” Fushiguro questions, almost pointing with his eyes at the boy who had just come out of the training room.