According to a representative from N.A.P Entertainment, Sunggu recently expressed his wish to leave the group. The rep stated, "We have received Sunggu's request but have not accepted. His departure from the team is not confirmed. The final decision will be made after a thorough discussion. Sunggu also agreed to complete the schedule set for March."

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Sunggu is the leader of the 4 member group HIGH4 that made their debut in 2014.