H1-KEY (Korean: 하이키; Japanese: ハイキー) is a four-member South Korean girl group under Grandline Group (GLG). They made their debut on January 5, 2022, with the debut digital single "Athletic Girl".
The group's name, H1-KEY is inspired by the word "high-key" and points to a healthy and confident beauty. It also contains positive meanings such as "very", "really", "clearly", "in the open" and "intense".
M1-KEY (Fandom Name) Explanation: H1-KEY fans are their keys, which they will carry with them wherever they go to tour everything together.
The member line-up originally consisted of Seoi, Riina, Sitala, and Yel. However, Sitala left the group on May 25, 2022. A month later, Hwiseo was introduced as the new member of the group.
On September 5, 2023, H1-KEY got their first win with "SEOUL (Such a Beautiful City)".
Korean: 서이
Korean: 리이나
Japanese: イ・スンヒョン
Korean: 휘서
Korean: 옐