I fell in BNHA

Infirmary

Thank goodness, Momo was there to tell Kirishima and Bakugou what to do, because, worst case scenario, ice shards go everywhere, everyone dies and end of the story.

Kirishima created a first crack, enlarged by Momo and a hand grenade, who didn't do much, just enough for Bakugou to put a hand and create an explosion. Meanwhile Todoroki and Denki were still looking for the ice tunnel's entrance, who was unexpectedly very well hidden, going inside the building, attached to the roof but then leaving through a window just to reach the rooftop.

By the time they had entered the tunnel, Kirishima was checking on Kiki who was held by Momo. They both then went to take to the infirmary, Kirishima carrying Killi.

Bakugou, because he was still furious, was given the task to destroy the tunnel. Not even five minutes after starting, he was able to see lego ice blocks slowly advancing towards him. As it turned out, the tunnel was made of huge lego ice blocks, and exploding  the structure wasn't necessary after all. Those blocks were being recollected and pushed by Todoroki and Denki.

Because Bakugou was being a fucking bother and his screams (shineeee) were amplified by the ice structure, Todoroki (seing him from afar) proposed to Denki to just let the ice legos slide until the end of the tunnel, arguing that it would most definitely stop before reaching Bakugou (hoping the contrary thought).

Thus, while Todoroki was taking apart the tunnel, Denki was pushing the blocks as hard as he could, as per Todoroki's request. Since the ice slid nicely and silently, the yells did suddenly stop, although only for a minute. After a good number of explosion, two of the ice blocks came back at full speed, seeking vengeance.

Todoroki pushed Denki and they both sticked to the tunnel's walls, letting the ice blocks go through and crash on one of the school's walls (nobody got hurt). Bakugou was just behind the ice blocks, and Todoroki acted surprised- why was he here? 

Bakugou yelled the reason, Denki explained that it was supposed to stop before reaching him, 'who the fuck told you that' yelled Bakugou, before learning it was all Todoroki's fault. Unfortunately for him, his attempt of attacking Shouto was blocked by a passing-by Aizawa, who nullified his quirk but did not stop or anything, his priority was infirmary.

One glare had been enough to calm down the trio. Todoroki sighed, "Let's just end with this and go eat."

Which made Bakugou yell because he was not going to follow his orders, though he did. Being three, and just pushing the giant ice blocks outside to let them melt on their own, it got finished in less than five minutes.

Meanwhile, Momo and Kirishima, on their way to the infirmary, met Deku and Jirou, who were coming back from the infirmary. The group went back to the infirmary as a whole, left the kid, went to the cafeteria but met their teacher after the first corner. 

Their faces light up, clearly wanting to talk with Aizawa, but his only response was 'after lunch', and so they prepared a set of questions they'd ask on their next class.