Taki Anna no Honshou wa S nano ka M nano ka Ore dake ga Shitteiru.

Other Name: 瀧晏名の本性はSなのかMなのか俺だけが知っている。, Only I Know Whether Taki Anna's True Nature Is S or M, Nature of Anna Taki is S or M either of whether, it is only I know.

Taki Anna no Honshou wa S nano ka M nano ka Ore dake ga Shitteiru. - Summary

Magamo Yoshihiro accidentally walks into Anna’s room as she was in her leather outfit masturbating in broad daylight. This chance encounter will define an ever-changing relationship between them especially as they go to the same school!