Server
A new dungeon entrance has been discovered! Tanya asks Asahi to explore it to see if it’s safe. If it is, it will be opened up to all adventurers of every rank. Asahi is excited about taking on a quest by himself, but, alas, it is not to be.
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