The Grey Heroes (MHA x BSD)

The purple fog filled the room and giggling sounded from within it.

The League of Villains arrived.

The class realized it was a set up.

"How did they know about our detective classes?" Denki asked, a little freaked out.

"Oh, I alerted them. Through a mystery route of course, or they wouldn't have fallen for my trap." Dazai smiled, sending shivers down their backs.

"...mystery route...just say that their class has a traitor you darn waste of bandages!" Chuuya shook him as Atsushi and Akutagawa just sighed off to the side.

"You guys do remember that the League is here, right?" Iida asked nervously while the rest of the class murmured in worry at the thought of a traitor in their midst.

"Yea, but we're not worried. We have it all planned out." Atsushi assured him with a kind smile.

"The final for the class has changed students! You see, I know who the traitor is, and I want you to figure out who it is by the time me, Atsushi, Chuuya, and Akutagawa are finished taking care of the League of Villains."

"What!" The whole class was shocked.

"Atsushi and Akutagawa are students too though! They might be the best fighters here, but what if they get hurt? They're still young and also need to do the final!" A couple of students began voicing worries.

"Don't worry. Me and Jinko have dealt with far worse opponents apart from eachother, but with each other we're invincible." Akutagawa smirked and off the four went with no more words.

***

"How confident of you to come towards us! I thought you had a brain?" Shigaraki gloated as the four walked towards him and the league. "You may of beat us last time, but now we have a secret weapon! Kurogiri, bring the Nomu's'!"

From the dark mist appeared Nomu after Nomu after Nomu.

They kept emerging, freaking out the class in the back of the bank, worried for their classmates and teachers.

***

"We need to go help them!" Uraraka insisted.

"No way! Don't you remember how strong those idiots are? No matter how many Nomu's, the League won't beat them!" Bakugou announced with dedication. "We just have to focus on who the traitor is, they'll handle the rest."

***

There were around 100 Nomu's, just like Dazai and Atsushi had predicted. Chuuya couldn't help but scoff. "Of course they had the numbers, and they want me against them. Darn manipulative schemers."

Akutagawa approached Dabi and Toga