Tensei shitara Ken deshita

Reincarnated as a Sword, also known as I Became the Sword by Transmigrating (Japanese: 転生したら剣でした, Hepburn: Tensei Shitara Ken deshita), also known as Tenken (転剣) is a light novel series written by Tanaka Yuu and illustrated by LLO.

The novel series was adapted into a manga series by Maruyama Tomoo and published by Denshi Birz.

Plot
When a 30-year-old salaryman and games enthusiast is suddenly killed in a car accident, he finds himself reborn into a fantasy world…but in the form of a sword! Now he’s in search of a beautiful woman to wield him, and a cat girl named Fran might be the exact adventuring partner he needs.