Premise: Kwon So-hyun (born August 30, 1994), is a South Korean singer and actress. She was known as a member of the South Korean girl group 4Minute, under Cube Entertainment. She is also a former member of the South Korean girl group, Orange. Before June 15, 2016 (end of her contract with Cube), Sohyun left 4Minute and the record label along with members Nam Ji-hyun, Heo Ga-yoon, and Jeon Ji-yoon.
Hypothesis: Kwon So-hyun left Cube Entertainment after her 22nd birthday.