How Did I Become the Master of Monsters?

In the old school building, the Zashiki boy burned with the fire At the bridgehead of the water town, the rain girl feels alone and sad In the ski resort, the snow girl seeks herself There are witches, gods, and monsters here There is fighting, warmth, and sadness ……………………… This book is also known as: I Became the Monster King in Japan, Reborn as a Monster in Japan, The Lord of Demons and Monsters, My Monster Teacher, The Lord of the Night Walk of One Hundred Ghosts