This is the Mei storyline 

-------------

Everyone had gotten back from the hospital, and had recently received the notes from Deku...and had realized Mei was working with the villains as well. "I...can't believe she'd do this..." Denki said, hanging his head low. "She was already on their side before she came...she could've been working with them the whole time..." Iida said sadly, looking away. "To think...we were friends with her..." Mina said, looking down sadly. "I can only imagine how Koy feels..." 

Not too long after, Koy came out of his dorm room, holding his ribs slightly, but was dressed. "Where are you going?" Bakugou asked, looking at him. "I'm going to find them..." Koy said, throwing on a jacket. "Knowing them, they might be working together..." 

"You're going to look for Deku and Mei...?" Ochacko asked, Koy nodded. "They might be helping others, so-" "You really think Mei would be saving people?" Iida cut him off, standing up. Koy was silent for a moment. 

"I understand wanting to find Midoriya...but why Mei?" 

"...She might need our help..." 

"She's a traitor, Koy, she works for the villains." 

Koy tensed up, clenching his fist. "...Shut up..." Iida sighed, going up and putting his hand on his shoulder. "I know you care about her, but she betrayed us, she-" 

BAM

Koy had turned and punched Iida in the face, causing him to stumble back. "I SAID SHUT UP!" he yelled, Bakugou and Kirishima rushing to hold him back. "Stop this, man! We can't be turning on each other!" Kirishima told him. "She's not a traitor! I know she's not!" Koy yelled again, trying to get away from the two. Iida glared at Koy. "She was on their side, it was only a clone that was fighting with us, that was made from the villains!" 

"She still helped us in the end! She tried to fight for us!" 

"She was using us!" 

"No, she wasn't!" 

"Why can't you see that she never cared?!" 

"Because she did care!" 

Tears started to fall from Koy's cheeks. "I know she did...I could see it...When she first arrived, I hated her more than anyone else...but the more I was around her...she loosened up, she started rough, and wanted nothing to do with being a hero...but she started to care...she started to love...I knew it was a clone even before the war, but even the clone showed how she truly felt...she cares about us, and that's why she escaped, not because she didn't want to get caught, but because she didn't want to hurt us...I saw the pain in her eyes as she ran from the field..." 

Flashback

Koy was limping, coughing up blood as the battle came to an end, everyone was getting medical help, and debris was everywhere. He looked around and saw Mei...running away. "Mei?" He said weakly, limping over to try and get to her. Mei was running off and then saw Koy trying to get to her. 'Koy...I'm sorry...' she thought, before warping herself away. "Mei! Wait please!" he yelled, trying to run after her, but tripped, holding his ribs. He looked up, seeing her turn to him, her eyes filled with tears. "MEI!" he screamed, trying to crawl to her, but she stepped into the warp, and he saw it vanish. "No...please no..."

End of Flashback

"...She wanted to stay, but they would've arrested her. She's out there helping Izuku. And if none of you are willing to help, then I'm looking for her on my own." Koy then exited Kirishima and Bakugou's grasp, turning to the door. Suddenly, he felt someone grab his hand. 

"Koy...we will always work together, remember?" He turned and saw Kay. "No matter what, I'm by your side." 

"Me too, idiot," Bakugou said, putting his hand on his shoulder. "Deku- Er...Izuku has always been trying to help me when we were growing up, so I have to find him...and I know Mei, and she wouldn't just betray us." 

"I want to help too," Tsu said, standing up. One by one, everyone went over to Koy, showing they wanted to find the two. Iida stood there for a moment, hesitant at first. "...If she truly is innocent, she better have an explanation..." he said, going over to Koy. He teared up a bit, sniffling a bit. "Thank you...we're going to find Izuku and Mei...and bring them home..." he said, wiping his eyes.

--------------

I might do the fight next, maybe

We'll seeee~ :3

Dabi: Were you surprised I was-

Author-Chan: Nope. 

Dabi: ...I-

Author-Chan: Despite the fire, you threw out some hints. I knew you were the missing Todoroki.

Dabi: ...Hmph.