[MKON-111] My beloved girlfriend was brainwashed by the leader of a cult and was reduced to being a creampie toilet for the followers. (Censored)

I went to the home of my first girlfriend, Kokoharu-chan. There was a big photo of a cult leader hanging in the living room, and I was told that everyone in the family except for Kokoharu-chan were fanatic believers. Naturally, that didn't change the love I felt for Kokoharu-chan. Just as the two of us were starting to get along, Kokoharu-chan's brother came home. "We're going to perform the important ring ceremony now, so I'm sorry, but could you please go home for today?" I have no intention of interfering with the family's faith, so I decided to go home for today. I never expected something like that to happen after that...