Enbo: Taboo Charming Mother is a six-episode hentai OVA series centered on Kazuhiko, a young student living with his father and new, beautiful stepmother, Misako. Misako, feeling sexually neglected by her husband, becomes the target of a lewd anonymous caller who sends her provocative gifts, leading her to explore her desires in secret. This triggers a forbidden and complex relationship between Kazuhiko, Misako, and her sister Emiko, entangling them in a taboo love triangle that threatens to unravel the family.