我在镇魔司以身饲魔

When an overworked salaryman transmigrated to a fantasy world, he just wanted to live a quiet, peaceful life. But then he awakened the "Get Stronger When Demons Attack You System." And all of a sudden those fearsome demons started to seem very attractive to his eyes?! "Oh please, whip me again, baby!" (Source: Fanqie Manhua, translated)