Kurai Kūkyo

Kūkyo no Musume
Kurai's weapon, the Thermal Powder Dust Blade "Kūkyo no Musume", is a katana which releases fine explosive powder into the air when the trigger is pulled. The trigger is located at the top of the hilt. The powder will float in the air for a second before igniting and producing a high heat. The powder itself is extremely active and will float towards heat, namely human bodies.

Kodoku no Musuko
Rocket Propelled Power Boots "Kodoku no Musuko", which enable Kurai to reach extreme speeds as well as quickly maneuver tricky obstacles. They produce sharp bursts of energy, which on top of Kurai's already blurring speed, makes him blindingly fast. However, the Kodoku no Musuko are only capable of it's bursts of speed once every 10 seconds at max.

Trivia

 * Kurai's first name translates to Dark in Japanese, while his last name translates to Emptiness.
 * Kurai's weapon, Kūkyo no Musume, translates to Daughter of Emptiness in Japanese. While his Kodoku no Musuko translates as Son of Emptiness.