Unfortunately, due to a mistake made by God, a Japanese student named Shirokuro Sansui loses his life and is transported to a completely new realm. His ultimate goal in this strange place is to become an unbeatable entity. To achieve this, God grants him a letter of recommendation to an esteemed sage and 500 years of training with the sage. Once he reaches an unparalleled level, he stumbles upon an infant near his training area, commencing a new journey. Despite using basic techniques and a standard wooden blade, the apparently average Sword Saint is now prepared to join the battle.
