Kazusa Asagiri, dispatched from the Moekko Company's Audit Office headquarters, arrives as Takahiro Kanzaki's bodyguard. A member of the elite Alice in Chains unit, she possesses exceptional combat abilities. Kazusa wields two highly sharp combat knives, moving with remarkable agility and speed in battle.

Her assignment begins unconventionally when she sneaks naked into Takahiro's bed, causing an immediate misunderstanding. Despite her serious commitment to the role, Takahiro rejects her services. Reassigned to kitchen duties in the training facility, her knife skills prove invaluable, resulting in surprisingly delicious food.

Kazusa exhibits a stubborn, single-minded personality, persistently insisting on performing her original bodyguard duties to her exacting standards. She occasionally conducts protective missions covertly, hiding these actions to prevent colleagues from worrying.

A notable vulnerability is her intense fear of dogs, which triggers an immediate flight response upon encountering them.