Yuusha no Furi mo Raku ja Nai. Riyuu? Ore ga Kami dakara  

Even Posing as a Hero is Easy. Why? Cause I'm a God, 勇者のふりも楽じゃない――理由？俺が神だから――

In Japan, one of many gods named Keika (Hiko-no-Mikoto) struggled to gain followers. Disappointed, he was sent back to Heaven but ended up in another realm called Alexsild, which had been overtaken by the demon king. Despite being supposedly invisible to others, Keika appeared as a regular human in this new world. A princess knight informed him that to achieve godhood, he must accumulate accomplishments as a hero. Inspired, Keika resolved to vanquish the demon king and attain divine status in Alexsild.