Pure love game (1-9 volumes)

Publisher: Shueisha
Author: Mirano Kanda
Size: 112mm x 174mm
Number of books: 9
Language: Japanese
Category: Girl manga, manga
Latest issue date: 2003-05-23

Synopsis:
Ryoko and Aoyu, who became a sister and brother in their parents' remarriage. The very good -looking Aoi is actually a very lewd, and it's a great syscon. Every day, it is a scratch that sneaks into Ryoko's room. What happens to this sibling relationship! ?