My Girlfriend's Mother Is Flashing Her Nipples at Me Kana Morisawa (2016)

The story revolves around Taichi, who is in a relationship with Shoko, and his interactions with her mother. The plot explores the complex dynamics between the characters, particularly the unusual behavior of Shoko's mother towards Taichi. As the story unfolds, it delves into themes of relationships, boundaries, and desires, creating a sense of tension and intrigue.