Tonari no Seki-kun Ed #1 Set Them Free by Akira Jimbo
This ED matches this anime perfectly. Seki-kun is the master of killing time, in the show each episode is devoted to how he brilliantly kills time doing things we would usually consider a waste of time. However, Seki-kun does everything on an almost god-like scale, to the point where it seems like it would be less work to just pay attention in class. In this ED Seki-kun is seen wasting time in his classic sense of killing time.
To read the previous ED article go to Good Anime EDs #5 A to Z.
To read the next ED article go to Good Anime EDs #7 Kataomoi Fighter.