Captive's Contract / Toriko no Chigiri

The main heroine of the hentai, Yakumo Rio, lost her parents early and grew up with her younger sister Mio at their grandfather's house. But the grandfather was not an ordinary head of the family - he was also a yakuza boss. However, he tried to conduct his affairs so that not even a shadow of crime fell on his granddaughters. But soon everything will change... The Yakuza boss fell ill, and discord was sown in the family, and a power struggle began... What will happen to our heroines?