Read manga: Gun-Ota Ga Mahou Sekai Ni Tensei Shitara, Gendai Heiki De Guntai Harem Wo Tsukucchaimashita!?

manga
Summary:

Hotta Youta is killed while returning home from work on a cold evening. He wakes up being carried by a bunny-eared woman. Featuring Reincarnation, Guns and Harem, it's a Gun vs Magic Story that gives Youta a new life... and an edge!Adapted from the web/light novel of the same name.