Isekai Sniper wa Onna Senshi no Mofumofu Pet Another World Sniper Is Female Warrior's Mof-moffy Pet

Synopsis

A 31-year-old gun otaku, completely penniless, dies and reincarnates in another world! But he was reincarnated as a fluffy, cute little monster?! He meets a female warrior and they begin adventuring together. It turns out his gun knowledge is extremely useful in this other world. An other world, reincarnation fantasy! (Source: Shounen Gahou-sha, translated)