I'm always studying Masao is a dull virgin. His older brother is a real man. Uninhibited and erotic He brought his sex friends Yuuki and Karen home, They had sex many times, devouring pleasure. I don't get along with my brother, She is very interested in H things. The next morning, while her brother went to work, The seductive Karen and the devilish Yuuki, both still drunk, approach Masao, setting their sights on his innocent body...