Shinozaki – an everyday, ordinary salaryman whose head has been coming off too easily lately – finds his otherwise-typical life suddenly interrupted by a young woman named Yuuyake.

According to her, Yuuyake’s magician grandmother modified Shinozaki’s body to an extreme degree in the past- and he’s chock-full of machinery!

…All of which require maintenance that Yuuyake will apparently now be performing regularly.

With that, the slightly off-color daily life of an utterly ordinary salaryman, a magician, and a strange black creature named Grey begins!