Short and sweet!
I like all the HUD stuff like the chat box, quest log, and player details. The custom character art is also super cute.
The way the dialogue was written felt very authentic to me. I could totally see that kind of banter happening in a real online game's chat.
It's a really cool idea to make a fake MMO like this. One time I had a similar idea where you would switch between the "real life" character and the avatar in the game, but I think your game turned out much better than that one would've.
Having the game end at a set time was a nice touch, too. The server disconnecting without any input from the player feels perfect.
Very well done, IDOLL_Dev. ๐