Watashi no Tadashii Onii-chan: Story, Cast and Series Facts

Story and premise

Riyo is a university student who works part-time at a retail outlet. One day, while at work, she meets a young man named Kairi who bears an uncanny resemblance to her older brother – who she has not seen for many years. Kairi is an insomniac who has tried unsuccessfully to overcome his ailment. When they meet, sparks fly – she is attracted to him, and he discovers that when he is with her, his insomnia eases and he is finally able to get a good night's sleep. But while she is staying at his apartment, Riyo finds Kairi's diary and decides to look inside. She gets a terrible fright when she reads an entry that appears to involve her new boyfriend confessing to a murder. She knows that she must get to the bottom of the matter and find out whether this secret confession was really sincere. Has there been a mixup...or has she just fallen in love with a murderer?

Series details

• Title: Watashi no Tadashii Onii-chan
• Format: Scripted
• Language: Japanese
• Genres: Drama, Romance, Mystery
• Premiere date: 2021-10-15
• Final broadcast date listed: 2021-12-03
• Status in TVmaze: Ended
• Network listed by TVmaze: Fuji TV
• Network country: Japan
• Typical episode runtime: 30 minutes
• TVMaze ID: 60765
• IMDb ID: tt15277172
• TVDB ID: 411383

Seasons in the TVmaze catalogue

• Season 1: premiered 2021-10-15; final listed air date 2021-12-03; episode order: 8.

Source and licence

Adapted from Watashi no Tadashii Onii-chan 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.