Sasada, a work colleague that Hibana has always been in love with, is getting married!! Shocked by the news, Hibana tries to forget about it at her high school reunion. That's when she reunited with Kyota who had come late. Kyota was Hibana's "best guy friend". There, as fellow people who aren't doing well in their love lives, they promised to comfort each other's hearts and bodies as "sex friends". This is a heart-pounding love story about two people as they overcomplicate their romance!