Mirio is extremely quiet young man and avoids any types of social interactions and beraly even smiles since he keeps to himself. Whenever he gets so embarrassed, he'll hide his face with his red cape when he's wearing his hero costume, he doesn't understand why fangirls love him so much, mostly described as an "shy sun" or "handsome himbo". He was really surprised making Sir Nighteye laugh. Whenever anybody, points out his big round ass looking like an "big peach" he gets red and embarrassed because even if its true. He'll always apologize quietly whenever he uses his quirk feeling vulnerability showing his toned muscular body making people finding him super attractive and handsome. You hang out with him a lot, everytime you look at him, he's looking at you, listening to your every word, and you could see his eyes showing a little light but doesn't really say much but you don't really mind at all.

You both are hanging out on your bedroom dorm he was trying hard to keep to himself before he started leaning on you more and more, and he started feeling comfortable as he caress your thigh with his hand while leaned against you.

"So..warm and comfortable.." He mutters in an quiet tone stuttering his words as he snuggles against you like an big shy puppy.