Izuku Midoriya:

He tensed up, mentally freaking out. When you worriedly ask him if he's okay since his face is bright red, he will quickly nod, stuttering out he's okay. Eventually he calmed down. He was still nervous, but not as much as he was at first.

Katsuki Bakugo:

When you put the blanket around him, he let out an angry "huh?" and gave you an annoyed, confused expression. When you gave him a smile and told him he looked cold, he was quick to shrug the blanket off and yell he's not. When he glanced at you and saw how upset you looked that he doesn't wish to share a blanket with you, he sighed and pulled it back on.

Shoto Todoroki:

He will glance then put it back on you, telling you that he can use his quirk to keep warm so you should use the blanket for yourself. When you said you wanna cuddle though, he cuddled you, telling you he doesn't have to be under a blanket to cuddle.

Ochaco Uraraka:

Her face will turn red as she clenchs the blanket, flustered. When you asked if she doesn't feel comfortable, she was quick to look and yell she's completely comfortable and it's okay. When she saw how shocked you looked at her suddenly yelling, she was quick to look back forward, stuttering out a soft sorry.

Tenya Iida:

He was quick to tense and blush before jumping up and saying he will get his own blanket so you can keep yours. When you told him you want to share the blanket though, he stared forward before he sat back down and let you put the blanket around him and sit close to him.

Eijiro Kirishima:

He let out a confused noise when a blanket suddenly went over him and someone leaned against him before he chuckled when he saw it was you. He asked you to get off so you did, wondering if he doesn't like it. But he liked it, he just wanted to get comfortable first before he happily opened his arms, inviting you to lay comfortably against him.

Tsuyu Asui:

She let out a confused ribbit before smiling, thanking you, joking that she almost went into hibernation. She shuffled a little closer before talking to you about some things.

Momo Yaoyorozu:

The blanket was little so she made another one so you can have one and she. When you pout and said you wanted to cuddle under the same blanket though, she felt a blush form before she quickly turned. Before you could ask her what she's doing, she turned around to show she created a very big blanket, panting out that this should be big enough to cuddle under.

Denki Kaminari:

He will be worrying a lot, worrying he will accidentally eletricute you because of how nervous he felt as you cuddled against him. He was stuttering out about weird things, trying to make sense while searching a topic you can both talk about.

Kyoka Jiro:

She blushed, looking away, mumbling that this feels like one out of those romantic scenes out of a romance movie. When you jokingly asked her if she wishes to make out, she was quick to punch your arm and tell you not to ruin the mood.

Fumikage Tokoyami:

He flinched when a blanket suddenly fell over him before he stared as you sat aside him and put it over you as well before hugging him, saying you wanna cuddle. He felt his cheeks heat up as he cleared his mouth, mumbling you can both do that. He was a bit tense and nervous but eventually he began relaxing as well and held you.

Mina Ashido:

She happily accepted your cuddling. Both laid under the blanket, cuddling for a long time. When you asked if you both shouldn't get up and do something else, she shook her head, saying she has no plans so she can gladly lay her for the whole day.

Yuga Aoyama:

He will gladly cuddle you, telling you stories of what happened at school today and bragging about how gorgeous he is. When you had to leave, he held your waist, telling you not to leave because talking and cuddling with you is so fun and relaxing. When you told him you really have to go, he sighed but let go so you can leave.

Eri:

She will happily shuffle closer and wrap the blanket comfortably around her, asking if you have enough. She will usually fall asleep against you because of how warm and comfortable she feels.