When It Rains, It Pours: Story, Cast and Series Facts

Story and premise

Kazuaki is troubled by the lack of intimacy with his live-in lover. Meanwhile, Sei, his childhood friend and co-worker who lives with him, harbors unrequited feelings for Kazuaki. One day, Kazuaki's email is mistakenly delivered to Sei, and they continue to have a strange relationship where they confide their worries to each other by email, without knowing each other's true identities. This is the ultimate love story of two people at the mercy of unrequited love and sex.

Series details

• Title: When It Rains, It Pours
• Format: Scripted
• Language: Japanese
• Genres: Romance
• Premiere date: 2025-01-10
• Status in TVmaze: Running
• Network listed by TVmaze: MBS
• Network country: Japan
• Typical episode runtime: 30 minutes
• TVmaze community rating: 7/10
• TVMaze ID: 81633
• TVDB ID: 457758

Cast and credited roles

• Asahi Itou — Nakarai Sei
• Muto Jun — Hagiwara Kazuaki

Seasons in the TVmaze catalogue

• Season 1: premiered 2025-01-10; final listed air date 2025-02-21.
• Season 2: premiered 2026-11-06; final listed air date 2026-12-11.

Source and licence

Adapted from When It Rains, It Pours 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.