Sweet confession of beautiful girl Mashiro Tsubaki. Mashiro Tsubaki has a group of close friends that she hangs out with, but Mashiro Tsubaki was made her lover's best friend because he didn't ask her out before, so she agreed to love this person. While drunk, Mashiro Tsubaki confided her secret to the other guy. They were so moved that they reminisced about their memories, and continued to fuck each other day after day. Mashiro Tsubaki immediately left her ex-boyfriend and joined the true man she loved. How will things continue?