Kokan Musou ~Kiraware Yuusha wa Mazoku ni Aisareru~

Kantarou, who has ascended to heaven because he is too sick, reincarnates in a different world. He is a fatty, is disliked even after reincarnating, but notices that a cloudy potion that cures anything from his crotch appears. Moreover, it also has the effect of powering up the demons, and it will be loved by the demons.