After Metaria's reawakening, Kunzite assists Zoisite in obtaining the Rainbow Crystals. In the first anime adaptation, Kunzite and Zoisite are lovers as well as allies. In "Sailor Moon Crystal", Kunzite calls out Jadeite for his failures. Some (but not all) kunzite used for gemstones has been heated to enhance its color. The members of the Neo-Four Kings of Heaven were Kunzite, Hematite, Hiddenite, and Kalunite. She forewarns Kunzite that if he harms Prince Endymion, she will kill him. Kunzite is killed when Usagi reflects his own energy blade back at him. During that time, Kunzite tells Mamoru where Metaria's weakness is. This form first appears in Act 21, as a servant of Kunzite. However, he also works closely with Kunzite, sharing concerns and strategies as he works.