Yeseo (예서), also known by her full name Kang Yeseo (Korean: 강예서; Chinese: 姜睿序; Japanese: カン・イェソ), is a South Korean singer and actress under 143 Entertainment. She is a member of the project girl group Kep1er, a former member of the girl group Busters and the kid group CutieL, and a pre-debut member of Pritti.