Mamagoto ~Mama to Naisho no Ecchi Shimasho~

After graduating high school, the protagonist returns to his family home, only to find awkwardness has grown between him and his loved ones due to years in a dormitory. He confides in his mother's senior colleague and neighbor, Kyoko Kawashima, but she secretly wants the protagonist as her own son. She uses 'advice' as an excuse to initiate naughty skin contact, hoping to make him obsessed with her. However, his mother Chikage notices and desperately tries to get closer to her son so he won't be stolen away—only to get too excited herself! And when his tsundere little sister Aki and Kyoko's daughter Yuma join the fray, a kinky family battle for the protagonist's intimacy begins!