Be gullible and see what Mineta has

Mineta's room was... much more normal than Deku had thought it would be. Sure, she had the overwhelming feeling that she needed to be really careful about where she stepped or sat and there were a few too many tissues in the trash bin, some risque (bordering on rule breakingly lewd) posters were hung on the walls, but there wasn't any absolutely disgusting decoration or anything. Looking everything over, Deku sat on the corner of his bed, watching as he went through his notebooks, mumbling to himself.

"...finally a girl in my room and it's Midoriya..." she overheard. He kept looking and finally pulled one out. "Aha! Found it!" he said. He walked over and sat next to her on the bed, making her skin crawl a little at how close he got. He popped the notebook open to a page. "This is based on a lot of research into stories of spontaneous body changes."

Deku narrowed her eyes but read the words on the pages. As she read, her eyes widened. There were statistics, charts... it almost looked like a textbook. She took the notebook from him and started reading more closely. Categories for what caused the change: Quirks, science, magic... that last one got a raised eyebrow from her, but that could probably be chalked up to quirks that the person didn't know about, right? Percentages of people changing back to normal, if they had any control over it. She saw a section that seemed to get into sex, which... okay, that didn't surprise her. This was still Mineta. She turned her eyes away from that. "Wow, this is more comprehensive than I thought it would be."

"I take this stuff very seriously," Mineta said.

"I see that..." Deku said, flipping through the notebook. There were so many pages filled with this stuff, it would take hours to read. "So what do you think I should do?"

Mineta looked surprised for a moment, then held his hand out for the notebook. He flipped through to about the midway point and stopped, reading for a moment. "If you want the best chance of changing back, based on all of my research? You need to..."