MIAA-113 Until my beloved sister marries into the S family and falls into a masochist... Yui Hatano

My older sister married into a very wealthy and prestigious family. - I put a lot of hardship on my older sister, who raised me as a substitute for my parents. - That's why I wanted them to get married and be happy. - But... - We were so close that we kept in touch many times, but I haven't heard anything from him since the ceremony. - Curious, I went to see my sister. - There's no one in the mansion. - When I sneaked into the room where the door was open, I found a DVD. - It said, ``Record of impregnating a female guy.'' - I had a bad feeling...