IESP-704 Anka Suzune Lesbian ban lifted ~ I was made into my sister-in-law's sex slave ~

Anka comes to Tokyo to take university entrance exams and ends up staying with her brother and his wife. - Anka, who is sullen and lewd, has few friends of the same sex. - My sister-in-law, Hikaru, has a friendly personality and is not afraid to talk about anything. - Anka gradually becomes drawn to Hikaru. - While her brother is on a business trip, Hikaru ignites Anka's eros and tries to make her his sex slave. - Anka is gradually drawn into a world of perversion.