Rio offered to clean sensei's apartment, but accidentally destroyed his porn stash in the process. To make up for it, she offered to be his maid for a while. She also decides that, in absence of his maid cosplay porn, she should be the one to relieve his sexual tension... while dressed up as a maid, of course.
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*