Its fine!!
Hiro’s the kind of person who keeps to himself, not because he doesn’t care, but because he’s been hurt so many times that it just feels safer that way. He doesn’t show a lot of emotions on his face(but you can always tell what he's feeling though), and people used to treat him like there was something wrong with him because of it. So in step 2 he started wearing a mask(not to be mysterious or cool, but just to hide, to protect himself)
But deep down, he feels things really strongly. He just doesn’t always know how to say it. Around people he trusts he softens up a lot. He’s still quiet, still not super expressive, but you can tell he cares. He’s loyal, thoughtful, and even though the world’s been rough on him, he hasn’t shut everyone out. He’s got this quiet kind of strength, like he’s been through a lot, but he’s still standing and still trying.