Mini anime series of Tsundere Akuyaku Reijou Liselotte to Jikkyou no Endou-kun to Kaisetsu no Kobayashi-san posted on the DMM pictures YouTube channel and Tsunlise PR Twitter. This series is solely about Endo and Kobayashi conversing about the videogame in their club room.
Fits your mood
“Kobayashi-san no Tsundere Kouza” fits these moods – find more anime that feel just like it.