Tensei Shitara Ken deshita

From Seven Seas:
Reincarnated as a sentient weapon with memories of his past life, but not his name, a magical sword saves a young beastgirl from a life of slavery. Fran, the cat-eared girl, becomes his wielder, and wants only to grow stronger, while the sword wants to know why he is here. Together, the strange duo’s journey has only just begun! This manga adaptation of the hit light novel series features charming artwork by manga artist Tomowo Maruyama and is sure to be enjoyed by existing fans of the franchise as well as all-new readers who are ready for a sharp fantasy tale.