>>276443271
I like the world itself a lot, too. First mahjong world I've seen so far, but very comfy, lots of options and explanations for mahjong (though the explanations on the sheet in the background are in Japanese), a music player for some background music, and a rainy night atmosphere with a kotatsu that has a heater beneath.
It also has a secondary observer room, so as to not disturb people playing.