: Directed by Atsuji Tanaka , who also collaborated with Rouka on character designs.
In the first episode, the protagonist is visited by , who is depicted with a "voluptuous" design and a cool, almost distant demeanor. She initially visits to thank him for looking after her sister, Mamori, but the situation quickly escalates into a sexual encounter. gomu o tsukete to iimashita yo ne 01 web
The narrative tension revolves around Nanami's specific instructions for the encounter. Despite her explicitly telling the protagonist to "wear a condom" or stick to certain boundaries, the situation leads to "internal ejaculation," which gives the series its title. A notable scene in this episode involves the protagonist accidentally splashing semen on Nanami's prized smartphone, which, rather than ending the encounter, serves as a catalyst for further intimacy. Key Characters : Directed by Atsuji Tanaka , who also
is an adult animated series (hentai) that premiered in December 2024 . Produced by Animation Studio Seven , the series is an adaptation of a manga by the creator Rouka . Key Characters is an adult animated series (hentai)