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Asahi is on a quest to take down a party who uses its status for evil, but one of their crimes hits a little close to home—falsifying ranks. An adventurer who is suspicious of Asahi decides to take a closer look at him. Will Asahi’s secret be discovered?
Episodes
1Did You Call for Your Big Sister? 2You Call Me Your Sister? 3My Sister, Maya-nee, Is All I Need 4The Big Plan for the Home of the Ikusaba Brother and Sister 5The Ikusaba Brother and Sister's Big Dungeon Exploration Plan 6The Hero and the Big Sister 7Portrait of a Certain Big Sister and Little Brother 8I Can't Raise My Sword Against a Girl 9The Preferred Form of a Big Sister 10My Amazing Little Brother 11Shark from Another World 12Big Sister Forever