So the fabulous admiral never gave Ryuujou her Kai Ni? Considering she's long past the remodeling level, wonder if the author missed that detail or it's on purpose.
Apparently, Arisugawa sees Yamashiro as an angsty teenager in her rebellious phase. That... really makes far too much sense.
Younger sisterElder sister?Partner?Naka-san (Kai)Girl in her adolescent stageRyuujou (Kai)Physically impossibleRespectSouryuu (Kai)Lessons' mentorAidingNagato-chanOn friendly termsRespectDaughterPissedGirl power councilKashumiLikesYamashiroCan settle down in the presence of each otherThinks she's cuteDisgust