K-On! 1

Oh, how I love this series from the start. First, OP/ED are like, the best. ED is great. OP, you can search for. Called "Cagayake! GIRLS" and I love how Yui goes "No, no, no!" as a chorus. Very good. So, first, started with Yui waking up late. Then running off to her new school and enjoying it, typical plot. Then goes to K-On! looking for members (Only Mio and Ritsu are there).

Now, before seeing the episode, I looked at the OP/ED. My first thoughts were Mio was the main character from ED, or a Rival for Yui from the OP. Ritsu was quiet and did comedy like that one girl from Hyakko! (need to finish that...).

And Tsumugi was just plain quiet and caring. Was wrong, except correct mostly. Yui, main character, Mio, shy girl. Ritsu, blurting out and comedy effect (correct). Tsumugi, talkative and caring (correct). So yeah, ended with them all forming K-On! and finishing it the "club".