Baka na Imouto wo Rikou ni Suru no wa Ore no xx dake na Ken ni Tsuite (バカな妹を利口にするのは俺の××だけな件について), often abbreviated as Baka na Imouto, is a Japanese adult anime OVA series produced by Collaboration Works. The third episode continues the story of Yuuichi Mitsui and his younger sister Hana, exploring their increasingly complicated relationship.
In Episode 3, the story delves deeper into the dynamics between Yuuichi and Hana. Hana, who is intellectually childlike but physically mature, continues to believe that consuming Yuuichi's "special milk" will make her smarter. Yuuichi, despite his guilt and internal conflict, finds it increasingly difficult to resist his desires due to Hana's innocence and naivety. The episode features further intimate interactions between the siblings, driven by Hana's unwavering trust in Yuuichi and her desire to become "smarter." Yuuichi struggles with his feelings, torn between his love for Hana and the moral implications of their relationship. The episode also hints at the emotional toll their actions take on both characters, adding a layer of complexity to the narrative.
