If you aren't a hero, just think they asked you to do something for them and now you are putting all your focus on this thing they asked of you.

I didn't really give them proper endings since I like writing open endings more and also because some might have a hero MC who has a Quirk that needs powering up so some might fight back while others might rush away so I also left it open ended so it can apply to everyone's MCs, or I hope so at least.

Izuku Midoriya:

He will kick or punch away any approaching enemy, trying to be as silent as possible so you can have full focus. When you finished, he landed aside you from a kick he performed on the enemy and said you did a good job.

Katsuki Bakugo:

He will keep insulting the enemy to keep their attention on him and not you so you can focus on your thing. When the enemy tries to go for you, he will be quick to blast an explosion in their face, angrily yelling for them to focus on him.

Shoto Todoroki:

He will put an ice wall around you. If you can't stand the cold, he will even put a burning log aside you so you have some kind of warmth. Once it was over, he unfroze the wall and asked if you are okay since it must have been very cold inside the ice walls.

Ochaco Uraraka:

She felt extra pressure but held up her fists with a determined look, assuring you she will protect you so just focus on your thing. When you were done, she let out a sigh of relief and said that was weirdly too much pressure.

Tenya Iida:

He got a determined look, yelling to focus and leave everything else to him. When you told him he doesn't need to shout, he shouted a sorry before focusing on making sure there is no enemy coming near. When you finished, he asked if you are sure you are done before saying you did a good job.

Eijiro Kirishima:

He stood aside you with his fists ready, making sure to punch the enemy away or use his Quirk when they tried to attack to keep you safe. When you want to look at him to make sure he's okay, he will yell he's okay and to just focus on your thing. When you finished, he gave you a hug out of excitement, saying you two really make an awesome team.

Tsuyu Asui:

She sat like a frog aside you, making sure nothing is gonna take away your concentration. When you finished, she got up, saying everything is still safe so you can double check if you need to.

Momo Yaoyorozu:

She put huge, steel shields around you so you can be safe. She continued her fight while always glancing over at you to make sure you are safe and nothing is disturbing you. When she saw you hold up a thumb, she rushed over, asking if it's done.

Denki Kaminari:

He told you he will protect you so don't worry about a thing. As the enemy came running, Denki used the highest electricity causing the enemy to pass out but him to turn to his yay-mode and walk around you, holding up thumbs, muttering about how he did it and you are safe.

Kyoka Jiro:

She put her earphone jack into the ground, listening for any villains coming this way. She felt nervous, really hoping nothing happens so you can peacefully focus. When you told her you are done, she let out a sigh of relief, pulling her jack out before getting up, saying a good job.

Fumikage Tokoyami:

He will stand aside you, eyeing everything, making sure the enemy isn't gonna come near while Dark Shadow scouts a bit further. When the enemy appeared, he gently put his hand on your shoulder, telling you to keep going before he rushed off to go fight off the enemy.

Mina Ashido:

When the enemy tried to get near you, she used her acid wall, laughing out a "ha!" before telling you to keep it up as you are doing a good job. Every time the enemy tried to get near, she used her acid wall while yelling it's all okay so you know you don't have to worry and keep focusing.

Yuga Aoyama:

He felt very nervous and pressured, not wanting the responsibility of making sure you are safe and can do this with all your focus, but he sucked it up and focused on keeping you protected. When he saw a villain in the distance, he ran away to go somewhere far from you and blast his laser to attract the villain's attention so they won't go to you.

Eri:

She held your shirt nervously, eyeing around to make sure no enemy is gonna come and if they do that she can tug your shirt and tell you. When you finished, she nervously asked if you are done, hoping this battle ends quickly.