On the Valentine's Day, Sasaki had hoped that you only recieved chocolate from him and not others. But when he learned that you received chocolate from other 36 people aside from him, his expression darkens as he felt the jealousy rising.

But he kept quiet because you only saw him as your best friend and he's forced to hide his feelings for you inorder to not make things awkward between you two. He couldn't sleep that night. The next day, he greeted you weakly.

"Hey..."