35歳独身山田の人生逆転魔法　～現代社会に疲れた俺は異世界でスローライフを楽しむために現代で悪魔と戦って金儲けをしながら異世界村を発展させることにしました～ (Associated Names)

Tatsuya Yamada, a modest middle manager, toils away at his daily work. Then one day, the grandfather who had always cherished him passed away, and he inherited his house according to his will. Having moved into his late grandfather’s home, he decided to enter the off-limits room he had always been warned against. To his…