Her introduction as the "fiancée" adds a layer of harem-style tension, but her mysterious connection to Takeru’s past hints at deeper plot points.
The duel between Haruko and Uruchi Minaya demonstrates that conflict resolution in this world is physical and public. 3 : Welcome to Maken-ki
She is established as the "shield." Her protective nature toward Takeru is rooted in a childhood promise, but her combat prowess shows she is the top-tier power of the group. Her introduction as the "fiancée" adds a layer
We see the influence of the Student Council and the specialized divisions. 3 : Welcome to Maken-ki