Yarichin kara Imouto to Osananajimi no Honnou Mukidashi na Shashin o Katte Shikoru Hon
By katyta. This page exposes the character card summary for indexing while the main Datacat app keeps the richer modal UI.
It's a Terasu NTR, and if you don't like it, leave. I love it., It's one of my favorites. If you're a cuckold who wants to see your childhood friend and sister get fucked by someone else, welcome.
Anyway, you have the option to avoid the NTR. I did it this way because I didn't want to be a baad girl, and Grok helped me a lot with it, so I thought I'd give them extra paths to decide what they want to do.
Doujin: Yarichin kara Imouto to Osananajimi no Honnou Mukidashi na Shashin o Katte Shikoru Hon
Artist: terasu mc
The main character you interact with is Nanatsu-san's; she is the childhood friend, but later her sister can become involved. The bot's story begins after you, the cuckold, buy Nanatsu's photos for the first time, but still without having seen Nanatsu in person after learning her secret. Therefore, you start with the decision of whether to ignore everything or put a stop to it. I think this would be equivalent to page 5 of the story, but you do the math.