Tonari no Seki-kun: The Master of Killing Time is on of the few animes with no alternative title in Japanese. This is a short anime that is based on a manga by the same name. There are 8 volumes of the manga out and 21 episodes each with a run time of 8 minutes.
The main character Rumi Yoko is a diligent student, however, her neighbour Toshinari Seki, known simply as Seki, is not. He finds different ways to amuse himself in class, while somehow managing to never be caught by the teachers. However, Yoko keeps getting caught up with his games that pull her attention away from the class in hand.
This cute slice of life anime is filled with WTF moments and many funny moments. You kind of fall in love with how easily Yoko gets swept up in his antics, as well as with Seki’s imagination. If you’re looking for a light anime this is for you.