Grope  Yami no Naka no Kotori Tachi 

Grope～闇の中の小鳥達～ 1st.「M～エム～」 

A school with a dormitory system, one day there is a big earthquake and the school collapses, 4 students happen to be trapped together,  Shinichi and his childhood friend Fubuki, his best friend Takaaki and Senju. They all start looking for an escape route.

However, Takaaki uses this chance to have sex with Senju and Fubuki, the girls that are in love with his best friend Shinichi....

Grope Volume 1     RAW

Grope Volume 2   RAW