Guniibuu

First of all, I'm not mad at what Pops has said to Chisaki. It was all true and needed to be said. Pops is probably the only person who could help Chisaki see that his wrong doings were toward Eri not Pops. Pops was calm, patient, and truthful, which I respect. And in going to see Chisaki, saying he would be there everyday to remind Kai that Eri was his victim, in a way was him taking some responsibility. Pops could've easily abandoned Kai, left him to wallow in prison not learning anything, but he the's taken it upon himself to go to him.

If it is everyday, I'm sure some questions will be asked. "Why did you think that was ok?" "Because the same happened to me. I didn't want to believe it was bad, what happened in the orphanage, so I did the same... thinking she'd be fine like I was." It most likely wouldn't go this smoothly, but eventually they'd get to the bottem of it. Not excuses, but reasons.

Not to mention the part where the TV program talked about there being other AFO/Shigaraki's out there. Could be a metaphor for other dangerous villians in general, or that Afo/Shiggy have another skin.

In that case, if Chisaki ends up talking about his time in the Doctor's torture orphanage (which would be caught on camera and seen by Tsukauchi) Kai might be valuable to speak with regarding who could be potential vessels. Or to explore the abandoned orphanages, I'm sure the Doctor took the kids through some secret passages to his lab. Chisaki might remember where to find that. (The delusions are starting to take over...)

Him being a vessel is out of the picture, he has his Pops now, even if their relationship is screwed up.