Hajime Hinata:

Hajime had noticed that whenever he was around you, he would begin to stutter and blush profusely. He did not understand this feeling so he had gone to his best friend Chiaki and asked him what was going on. She had told him that he had fallen in love with you.

Nagito Komeada:

Obviously, this boy had a huge crush on you. He thought that you were the best. You both have been friends for years yet, he wanted to be way more than that. He is just scared that you only think of him as either just a friend or a brother and you are going to reject him.

Gundahm Tanaka

You and Gundahm were taking care of his Dark Devas of Destruction during the weekend and he realized how good you were with them but then he realized something else. Every time you smiled or giggled, his heart would stop, he would feel butterflies in his stomach and his face would go redder than Mahiru's hair. He decided to ask his close friend, Sonia Nevermind, what was wrong with him. She replied stating that he had gained feelings for you. He tried denying it, but then he turned to look at you and realized Sonia was right.

Kazuichi Soda:

Kazuichi was hanging out with Sonia in her room. It was going all fine and dandy when Sonia suddenly spoke up. "Hey Kazuichi?" she asked mischievously. "Yeah?" he replied. " I just noticed something," she said giggling. "What is it?" he asks. "You and Y/N seem to be pretty close and I was wondering.... do you like her?" she asked. Kazuichi began to blush. "I-I I do not know...." That's when Sonia began to fangirl. "You two would make such a cute couple!" she squealed. Kazuichi blushed even more before mumbling under his breath. "I guess I do like her..."

Fuyuhiko Kuzuryu:

Fuyuhiko realized he liked you in class because you saw him as normal. Others were scared of him cause of his Ultimate. He was also scared of himself sometimes, he was afraid you'd stop being friends with him but you never stopped being friends. Thus his feelings for you began to blossom.