Kuromaku Island (黒幕島, Kuromaku Tou) is the Kurokami Space Development Center, located right on the equator. It houses the rocket Black Light (ブラック ライト, Burakku Raito), the vehicle meant to be used to reach the second Jet Black Wedding Feast's third stage, the moon.
The rocket Black Light is considered a piece of Bukiko Udou's treasured collection. It is capable of reaching the moon in three days time. It apparently cost one trillion, seven-hundred billion yen (twenty-one billion U.S. dollars). The rocket is destroyed when Zenkichi Hitoyoshi and his Student Council crash their jet into it.
- Kuromaku means "Mastermind".