Rules that you can like if you win (Volume 1 whole volume)

Publisher: Takeshobo
Author: Sachiko Aida
Size: 112mm x 174mm
Number of books: 1
Language: Japanese
Category: Youth manga, manga
Latest release date: 2014-08-25

Synopsis:
A college student Anna Sawashiro (Sawashiro Anona) asks the most plain and quieter man, Kei Oya, who seems to be the most plain and quieter at a seminar drinking party. But Anna loses easily ... "Can I like you if I buy it?" As soon as I won the game, it was not a drink fee for the large leaves that were transformed into a "S" man-! ? What it will be? Sweet and dangerous love bargaining☆