Sugahara Natsuki, known by the stage name Ruka, is a Japanese singer and rapper based in Bangkok, Thailand. In May 2025, he made his debut as a member of the project group A:SIDE with their first single "Fish Sauce" under Aplan International (เอแพลน อินเตอร์เนชั่นแนล). In December 2025, the company announced the conclusion of all activities carried out under the name A:SIDE.

(Source: MyDramaList) Edit Biography