I Want To Turn You.

One day, a tiny girl named Shina appeared inside a roll of toilet paper in the Yamaguchi's residence toilet. She made a stunning impression on a typical middle school student, Nobuo. "What if I use up all of the paper? Would I be able to see her... na... na... naked?!" It's the beginning of a story about love, lust and... a sh\*t ton of other adventures! (Source: Wydawnictwo Kotori, translated, edited)