Izumo: Flash of a Brave Sword

 Izumo: Flash of a Brave Sword (IZUMO:猛き剣の閃記, IZUMO:Takeki Tsurugi no Senki) is a 2005 anime television series with 12 episodes by Trinet Entertainment and Studio Kuma, which is the sequel to the hentai OVA Izumo. It is based on the eroge Izumo 2 developed by Studio E-Go!. The anime is licensed by Discotek Media and released on DVD in February 2017.

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