★A plain-looking girl with glasses is a slutty masochist! ★Shaking F-cup breasts! Her fair-skinned body groans! Thank you for your continued support! This time, we've called our hardworking and diligent female employee, Tsukino, to work on her day off for some slutty orgasm instruction! Kotone, a demure and plain-looking office worker with glasses, has a dry relationship with her boyfriend with no physical intimacy, and is feeling frustrated... Well, that makes things quick! If we start to tease her right away, she'll say...