Ijô shiiku: Waisetsu seikô.

Sakuya, a lackluster erotic manga artist, lives with her mother and older sister Kanoko. One day, she, who is her sister's mistress and became a manga artist thanks to her editor's ignorance, receives an offer from a new magazine. When Sakuya walks into her cross-dressing bar to study, she finds a man dressed as a woman there.