Tarou is a student who one day summoned up all his courage and took his savings to purchase the latest fourth-generation “satisfaction aid” from Orient Indastorial: the type FLA 4545. Externally hardly distinguishable from a normal woman, his new android looks like his childhood crush even in its standard version. Out of sheer anticipation, Tarou accidentally disconnects the cable link from the FLA 4545 during installation, which is then interrupted with an error message. However, since the imprinting on Tarou was successful and the minimum of necessary information is already available, the android Naoko still goes into “service”. As Tarou doesn’t want to wait a whole hour to attempt a new installation, he immediately sets out to enjoy his new humanoid toy…