Izumo: Takeki Tsurugi no Senki

Takeru Yagi's days revolve around school, kendo practice, and rivalry with his friend Takeshi, surrounded by childhood companions who give him a sense of family. A sudden upheaval at Izumo Academy leaves them in an abandoned version of their school, overgrown with plants and inhabited by unfamiliar monsters.

Caught between opposing forces in another world, they must put their swordsmanship to a far harsher test. As the distance between Takeru and Takeshi grows, finding a way home becomes inseparable from protecting a friendship neither expected to lose.