Hero Oniichan to Last Boss Imouto: Bakken! Seikenzer
ヒーローお兄ちゃんとラスボス妹 抜剣！セイケンザー
The Tsurugi siblings, Kanato and Minato, attend a local festival after Minato returns from overseas. Kanato pulls a holy sword, summoning the knight group Blood Temple. Concerned that Minato has turned evil, he attempts to rein her in, leading to a confrontation between the transformed siblings. Kanato refuses to back down in their battle.