Colorful Diamond

Colorful Diamond is a Japanese male idol group, formed on May 18, 2023 by the 12 members of the first term of the Boymen Area Research Students, the younger brother group of BOYS AND MEN. The group debuted in August 2023 with their first single "Amakyun," and in January 2024, Ishida left the group to form an 11-member group, which released its second single "Marugoto JELLY BE" in June 2024. In June, they released their second single "Marugoto JELLY BE∀NS" and in July, their third single "Karadai to Odorowo! In December, the 4th single "Kimigenic" was released, but in April 2025, Nakashita graduated and Oka went on hiatus. A documentary film about the group's activities, titled "Colorful Diamonds: Kimi to Boku no Dream," was screened in 2024, with a sequel to be released in 2025.

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