On April 21st, Eunhyuk wrote on his Twitter,
“It’s a little late, but thank you! I heard the news that we passed 500,000 copies, and it hasn’t really sunken in yet, but this self-pride somehow formed in me!”
Eunhyuk continued to virtually bow his head in thanks,
“I truly thank all of you who bought the album~ With this strength, we will prepare the 6th album!!!! Bowing (__)”
In his second tweet, he followed up with,
“And the 500,000 copies commemorative cake that’s a gift from eunhyuk.com!!! Thank you^~^ I will write a message soon!!!!!”
Each post had a certification shot attached of Leeteuk and Eunhyuk with the cake they received as a present.
Super Junior’s recent surpassing of the 500,000 copies mark with their album ‘Mr. Simple’ is the largest record of album sales in Korea in the past four years. That is a great achievement! Congratulations to Super Junior!