Kettlinga has 2 TREASURE concerts.

1. TREASURE (Hangul: 트레저), previously known as TREASURE 13, is a 10-member boy Korean group under YG Entertainment. The group consists of Hyunsuk (leader), Jihoon (leader), Yoshi, Junkyu, Jaehyuk, Asahi, Doyoung, Haruto, Jeongwoo and Junghwan. Originally consisting of 12 members, they debuted on August 7, 2020 with their first single album THE FIRST STEP : CHAPTER ONE. Members Mashiho & Yedam left the group on November 8th, 2022.