Shingeki! Kyojin Chuugakkou (Attack on Titan: Junior High)
The school comedy story is set in a junior high school and centers on the original manga's characters such as Eren and Mikasa as they battle with Titans. The spin-off incorporates gags while using Shingeki no Kyojin's story and notable scenes as its basis.
It reminds me of Teen Titan Go.
I am watching it now and it has only came out for 2 weeks now.