Nagayoshi Mori is Ranmaru's youthful-looking older brother and a fellow vampire, which means the comedy gains a second immortal with strong opinions about how Ranmaru is handling his prized eighteen-year-old. His arrival raises the stakes for Ranmaru, who would rather keep his bathhouse arrangement and his growing soft spot for Rihito to himself.
As a sibling, Nagayoshi is equal parts foil and instigator. He pokes at Ranmaru's plans and his obvious attachment to the boy, forcing the younger vampire to confront just how protective he has become. The brotherly dynamic adds another layer to the odd-couple humor that drives the series.
Within the warm, gag-forward tone of the show, Nagayoshi functions as a complication who tests Ranmaru's priorities, nudging the central comedy along while keeping everything light and family-flavored.
Nagayoshi Mori is one of the central figures in Babanba Banban Vampire, a anime/comedy/supernatural/vampire/slice of life series that aired on TV Asahi (IMAnimation) from 2025. Within the narrative of Babanba Banban Vampire, Nagayoshi Mori serves as a pivotal character whose decisions and relationships drive key story arcs throughout 2025 (Season 1). The character's journey has been central to many of the show's most memorable and discussed moments.
Portrayed by Yuichi Nakamura, Nagayoshi Mori has become one of the most recognizable characters in modern television. Yuichi Nakamura's performance brings nuance and depth to the role, creating a character that resonates with audiences on both intellectual and emotional levels. Yuichi Nakamura's work has been recognized with 1 major award, reflecting the critical acclaim their portrayal has received.
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Nagayoshi Mori is voiced in Japanese by seiyu Yuichi Nakamura.
Nagayoshi is Ranmaru's youthful-looking older brother and a fellow vampire, serving as both a foil and an instigator in the comedy.