18+ Makenshi no Maken ni Yoru Maken no Tame no Harem Life

Just an ordinary high school student, Soujirou Fujinomiya's life was cut short when he was stabbed by a burglar one fateful night. Or so he thought. Revived by a mysterious deity, Soujirou finds himself transported to another world, armed with a legendary samurai sword, "Hotomaru," plus the very blade that ended his life. What's more, Soujirou discovers that these enchanted blades can transform into beautiful babes! As Soujirou embarks on a thrilling adventure full of magic and danger, he will need to build a harem of steel in order to survive this strange new world.

(Source: Seven Seas Entertainment)