Nooo
lmaoaooa i was confused too why that arc just ended like that. nope he didn't but i guess you can say he can put half or 80% in now that kouichi learn magic
i think so, because kouichi has like some sort of magic that allows him to receive Klaus in order to get pregnant by him
He was learning the magic from rail but never really mastered it or tried it out...maybe will use it in the near future.
My only question is did he ever put his entire dick in