"Ikusei" is an adult-oriented anime series that delves into complex and taboo themes. Episode 1, released on December 27, 2024, introduces Masaki Fujiwara, a young man grappling with forbidden desires towards his adoptive mother, Mitsue. Despite recognizing the impropriety of his feelings, Masaki's internal struggle intensifies, leading him to act on his impulses. Contrary to his expectations, Mitsue's reaction is not one of outright rejection; instead, it reveals her own concealed emotions, setting the stage for a provocative exploration of their relationship. The episode is marked by its explicit content and psychological depth, aiming to engage viewers through its controversial narrative and detailed animation.