South Korean pop singer Kangta held an "Eternity" concert in Yonsei University's main auditorium in Seoul on Sunday.

Since the 29-year-old singer will begin fulfilling his mandatory 2-year military service starting on April 1, it is the last concert for his fans before he says goodbye.

Super Junior, Shin Seung-hun, Kim Min-jong attended the show as performing guests while some of Kangta's close friends, such as Lee Ji-hun, were also present.

The former vocal of South Korean boy band H.O.T encored with two H.O.T period songs: "Candy" and "Hope".

At the end of the concert, Kangta asked fans not to worry about him and promised his will finish the service well. His words made lots of his loyal fans cry.

The singer just released his latest album, "Eternity", on March 12, which is his first in three years.

One of the most popular members in the boy band H.O.T, which disbanded in 2001, Kangta has continued his stardom as a solo singer not only in South Korea but also in China and other Asian countries.