The song was uploaded on March 6, 2008. It's one of Minato's early and most notable works. It ranked first on The Vocaloid Weekly Ranking #25, and on October 28th 2008 it reached The Nico Hall of Fame (over 100,000 views). The song currently reached half a million views on Nico Nico Douga. Several parodies and utaite covers have been made. It's also featured in the MikuPa 2011 Live in Tokyo Concert as a part of a medley.
The song depicts Len as a womanizer and a playboy who sleeps with and leaves women and thinks love is 'just a game'. However, although he declares himself a Casanova, he knows his inner sorrow incapacitates him to love.
A short PV made by Yunomi. In this PV, Len is a womanizing playboy who seeks to amuse himself to escape the pain of not being with the person who he truly loves, Rin (hinted to be his sister).
Unable to cope with it anymore, he enters her room and it is implied that he simply takes what he sought. The ending shows Len crying while he holds Rin's bow.
A hand-drawn PV by Kagemaru. This PV eventually was removed due personal reasons.
Similar to Yunomi's PV, Len is a playboy who utilizes women as an amusement to distract himself of the pain that Rin causes because he can't be with her. He confronts her and afterwards, Rin realizes his feelings and embraces him. However she smirks at the end, implying that she is just toying with him, as he used to do with the rest of the women