After dying in a car accident, an unnamed man finds himself reincarnated in another world as a sentient sword with powerful abilities and no recollection of his name, though he remembers everything else from his previous life.

Yuu Tanaka started the series as a web novel hosted on Shōsetsuka ni Narō in October 2015 and ended it in February 2024.

[11] A manga adaptation by Tomowo Maruyamawa was serialized in Gentosha's Denshi Birz magazine from December 9, 2016 to January 15, 2018.

[48] A spin-off manga written by Tanaka and illustrated by Hinako Inoue was serialized in Micro Magazine's Comic Ride website from June 1, 2020 to January 30, 2023.

[100] The series is produced by C2C and directed by Shinji Ishihira, with Takahiro Nagano writing and supervising the scripts, Atsuki Saitō designing the characters and serving as chief animation director, and Yasuharu Takanashi composing the music.

[104] Theron Martin of Anime News Network, in his review of the first volume of the light novel, praised the interactions between the two lead characters, and said: "Beyond the action scenes, Tanaka's writing skill is a little above average.

However, he criticized the story's lack of originality, noting its similarities to So I'm a Spider, So What?, That Time I Got Reincarnated as a Slime, and Reborn as a Vending Machine, I Now Wander the Dungeon.