Hayashi Ayuka (林歩楓), known by her nickname King (キング) during her time in TNX, is a former member of NICE GIRL Project! as a NICE GIRL Project! Kenshuusei. On April 29, 2014, she was officially unveiled as a new NICE GIRL Project! Kenshuusei during Trainees Collection vol.9 at Shibuya Glad. On November 16, 2014, NICE GIRL Project! Kenshuusei appeared on stage for the last time during Iwai THE Possible JAPAN Tour 2014 ~FINAL~ at Nakano Sun Plaza. Afterwards, the program was dissolved, and the remaining trainees were dropped.

Prior to joining NICE GIRL Project! Kenshuusei, she was a child actress signed with Joby Kids Production. From January 2020 to September 2021, she was a 9th generation member of Sanspo Idol Reporter. After graduating, she remained signed with GMB Production as a talent and model.