Kekkon Shitai Otoshigoro

It's been a year since Rika left her husband and moved with her daughter Yukari into the home of Kazuma, her half-brother and her longtime lover. The chunky Yukari becomes attached to her young and affectionate uncle, calling him "bro," and engaging in unchildish games with him. Unwilling to cede "brother" to her mother, Yukari goes farther and farther in these games...