ヘイトフルワンダーランド (Hateful Wonderland)

Background
The themepark without an exit, the entrance is here.

The story of an amusement park that no one can ever leave. A girl muses how even though it seems like fun at first, more and more people fall into despair, including a sad clown(KAITO), a painter (Yowane Haku) and a bride(Luka).

This song has entered Hall of Fame.