Mio - Just like how she gets all freaked out and embressed^^ But still has courage to continue
Ritsu - like her tomboyisg personality and how she scares Mio
Besides she is a really good friend despite all the scarying, she really needs more attention.
Azusa - Almost second Mio only that not such huge coward and maybe even cuter than Mio. Cat ears SO fit her! And like her interections with Yui.
Sawako - mostly because of her epic run towars music classroom to get the picture