The Boy Next World: Heikousekai no Koibito: Story, Cast and Series Facts

Story and premise

The ordinary daily life of Yotsuba Fu, a college student with zero romantic experience, is suddenly turned upside down one day. The senior admired by everyone on campus, Kogami Sara, abruptly tells him that he is someone who came from a parallel world, and that "we are lovers", declaring it unilaterally. Confused by this sudden confession from Sara, with whom he has never even exchanged words before, Fu nevertheless finds himself gradually drawn to him. However, he soon begins to suffer from the inner conflict that he himself is not the Fu whom Sara loved in that parallel world. At the same time, Sara is also carrying a major secret of his own… Guided together by the threads of fate, what path of love will the two ultimately choose?

Series details

• Title: The Boy Next World: Heikousekai no Koibito
• Format: Scripted
• Language: Japanese
• Genres: Drama, Romance
• Premiere date: 2026-02-01
• Final broadcast date listed: 2026-03-08
• Status in TVmaze: Ended
• Network listed by TVmaze: Fuji TV
• Network country: Japan
• Typical episode runtime: 30 minutes
• TVMaze ID: 90049

Seasons in the TVmaze catalogue

• Season 1: premiered 2026-02-01; final listed air date 2026-03-08.

Source and licence

Adapted from The Boy Next World: Heikousekai no Koibito on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.