Ach

Ach is a trike-type Busou Shinki who appears in the animated series, engineered around blistering speed and agile combat maneuvers. She consistently partners with Ida, and together they form one of the show's most recognizable battle pairs. Despite her assertive tone and no-nonsense attitude, Ach has a genuinely warm heart and a strong instinct to look out for others—making her the dependable, action-first big sister figure that teammates can always count on.