After his lover left him, Isaka Hiroshi started up a dysfunctional sexual relationship with his little sister Matsuru. They have now lost their parents and only have each other left. Matsuru has a really low regard for herself, but she loves and depends on her brother. Hiroshi has a career to think about, not to mention that he's still hung up on his ex, Sachi. Will the two of them be able to find their own way towards happiness? [tethysdust]