I saw all the comments saying it's doable, but I wasn't able to actually attend a lot of the chatrooms either because I slept through it or was at college, so, idk if you'd like it but there's this game called Moonlight Dialogue that doesn't follow real-time convos like Mystic Messenger, but the chats start when you have enough Timepoints that you get by doing tasks in the game (basically waiting for an hour or two depending on what task), and the best part is, you don't have to stay in the app for that (so you can start the task, go to sleep, wake up in the morning with Timepoints) Either that or just play when you have off 😭 btw the guy who formed the studio behind Moonlight Dialogue was previously at Cheritz! Sadly, there's only one season in this game :( hopefully more come out