Conversation so far:
When was the song Oppa Oppa released?
The digital single Oppa, Oppa was released on 16 December 2011.
Who did Eunhyuk release the song Oppa, Oppa with?
Eunhyuk and Donghae released digital single Oppa, Oppa.
When did Eunhyuk perform with Super Junior?
Eunhyuk performed with Super Junior in 2005 to 2006, 2012, 2014, 2015, and 2017.
Did Eunhyuk relese any singles?
Eunhyuk released the singles Twins (Knock Out); U; Sorry, Sorry; Show Me Your Love; One Love; Rokkugo; Angel; Breakups Are So Like Me; Maxstep; Break Down; and I Wanna Dance.

Question: How did he treat his fans?
Self-contained rewrite: How did Eunhyuk treat his fans?