Hikigaya's Godslayer Tale

Wherever there are humans, there are myths. As humans evolved, they also created gods to rule their fates. In the minds of primitive people, alongside the material world they depended on for survival, there existed a parallel world of the gods. Everything visible and audible in the real world had its image and counterpart in this divine realm. The sun, moon, stars, wind, rain, thunder, lightning, birth, aging, sickness, and death were all manifestations and vessels of this sacred realm, controlled entirely by the gods. The ancients believed this without question. The above was the pretentious, serious part... But actually... someone transmigrates into Hachiman Hikigaya, aka the Great Teacher. You think this is Hachiman's romantic comedy? No, this world also has gods, magicians, martial artists, and all kinds of supernatural powers!