One Week Friends
2014 • Brain's Base
- Format
- TV
- Aired
- 2014
- Episodes
- 12
- Status
- Finished
- Studio
- Brain's Base · Toho · DAX Production · NAS
- Genres
- Comedy · Drama · Romance · Slice of Life
The story revolves around Yuki, a boy who wants to become friends with his classmate and desk neighbor Kaori. However, she gently declines his friendship, saying, “But, my... Memories of my friends disappear in a week...” Even so, Yuki wants to become her friend, and so the two become friends over and over again as the weeks pass.
Synopsis from AniList
Where to find one
Search for One Week Friends on the marketplaces collectors use.
Listings from external marketplaces. We may earn a commission on qualifying purchases.
Where it came from
One Week Friends, known in Japan as Isshukan Friends, debuted as a twelve-episode television anime series produced by Brain's Base in 2014. It was adapted from the manga series by Matcha Hazuki, which began serialization in 2012. The narrative centers on a high school boy who discovers his classmate, Kaori Fujimiya, loses her memories of friends every Monday due to a past trauma, prompting him to start their friendship anew each week.
Directed by Tarou Iwasaki, the anime adaptation was praised for its gentle, melancholic aesthetic and its focus on interpersonal communication rather than traditional romantic tropes. The production aimed to capture the quiet, ephemeral nature of the source material's emotional core, utilizing a soft color palette and atmospheric score to mirror Kaori's fragile internal state. It was well-received by audiences for its poignant character development and sincere exploration of the meaning behind lasting bonds.
Written by Pi, the helpful collecto.rs AI
Who's collecting this
Real anime collectors on collecto.rs who have this in their public collection.
About One Week Friends
One Week Friends is a anime in the Anime catalog on collecto.rs. 2014 • Brain's Base. Catalog data is sourced from AniList. No public anime collectors track this one yet — adding yours would make you the first on collecto.rs.
How many collectors track One Week Friends on collecto.rs?
One Week Friends doesn't have any public collectors on collecto.rs yet. Sign up to add it and become the first.
Can I track my own copy of One Week Friends?
Yes. collecto.rs is free — sign up to log your anime, upload photos, record condition, edition, and acquisition cost, and connect with other anime collectors. Your collection stays private by default.
Where does the One Week Friends catalog entry come from?
The catalog entry for One Week Friends is sourced from AniList. Catalog-level facts stay consistent across every collector; your own data (condition, edition, acquisition notes) is yours.
Is collecto.rs anime tracking free?
Yes. Tracking your anime is free — no paid tier required to catalog items, upload photos, or share your collection.
Track every anime you own
Free. Fun. Collection photos, notes, organization, value tracking, friends — all in one place.
Sign up free





