When playing the part Mori's girlfriend, Aiko pretends to be a shy, easily embarrassed, and emotionally dependent young girl to suit Mori's prior lies. Afterwards, she becomes all business and cold to Mori as he pays her. She also gives a 'gift' to her clients so her friends and classmates won't suspect she has stooped so low as to sell herself as a girlfriend. The items sold come from her home and she is fluent in lying to her father about not knowing where the various things disappear to.

She puts on a shy, high-pitched voice while acting, but normally she's blunt and straightforward.