Rui had a lil feelings for you ever since he saw you entering his class.

Soon, they started developing a bit when he was watching you a bit while the teacher was teaching, not in a weird way.

He confessed to you when school was over, you had a lil feelings for him too so you accepted.

But as soon as you noticed he was very busy with inventions. And could barely spend any time with you! You decided to confront him about this..