Nevermind, I found it! It's called 23:00! I didn't remember it very accurately though lol.
Oooooooo! That sounds interesting! I'm gonna have to take a look! Thank you for letting us know what it was! ٩(๑❛ᴗ❛๑)۶
No problem! I just reread it and it turns out I mixed two different manga together by the same author, lol ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄ The dorm one is Bijo ga Yajuu and the one about the dancer is 23:00!
Hahaha!! Now I have 2 new mangas to read!!
This is gonna be vague but a couple years ago I read a manga about a girl (simple person, short hair, sorta passive) who comes to stay in the rundown girls' dorm. There is a kinda mysterious male classmate of hers who she follows one day all the way to a bar (or club?) where he turns out to be working part time. He also danced there and had a lot of older friends. The girl didn't seem to have any sense of danger and if I remember correctly, the manga was more about friendship than romance. She most resembles the protagonist of Beauty Pop.
If you know what I'm talking about, please help me out because I've been looking for this manga forever. Thank you!