Motto Kimochi Ii Koto, Oshiete Ageru.

"Shall I teach you how to cum?" I became drenched down there during my first climax. How can I feel like this again…?
(Source: Coolmic)
Note: Initially digitally released as Naka de Iku Houhou, Oshiete Kudasai! (中でイク方法、教えてください！). The series was compiled to 62 chapters with its volume release.