This was an intro to the final part they released on their Fantia I think. I'm curious to see how it's going to end, it feels like this guy was introduced to give this story a bad "ending". When Arakure first started this story way back, in almost all their stories the boyfriend/husband never found out. Now in most of their stories, I'd say 8 out of 10 the boyfriend/ husband finds out. From the beginning of this story the old man has no interest in ruining Yumiko's marriage by exposing their cheating, I know he's ruining it by fucking her, porn logic here. This guy seems like the exact opposite and I do believe he mentions that they should see each other again in this story. I could be surprised, but I don't think this story is ending with Yumiko and Hiro(her husband) still being married and I'm not a 100% sure why that bothers me. It kinda does though.