Izumo: Flash of a Brave Sword - S01

Yagi Takeru has been living in the Touma family's house since his parents are gone. He was raised by the head of the house, Touma Rokunosuke. He is surrounded by many people: Yamato Takeshi, his best friend and rival from the kendo club, the Shiratori sisters, Kotono and Asuka, and his childhood friend, Oosu Seri. Life has been blissful until one day, an earthquake strikes the school and everything changes. Takeru wakes up to find that the school looks as if it has been abandoned for centuries and reduced to ruins. He also realizes that all the teachers and students have disappeared. He meets up with Seri and Asuka and they flee from the ruins, only to realize that the town they used to live in is completely empty. Then people wrapped in cloaks appear before him. They are told that they have been brought to another world.