I often thought of Chun doing this sort of thing affectionately to people she liked, but given her muscular legs it usually just ended up causing the person pain instead. Oh...I had a little doodle of a similar scene between Juri and Chun where she did it on purpose though...I don't have nearly enough time to draw out every little doodle!
I love that Chun is biting Cammy's ear. That's absolutely precious. This is super cute, and your anatomy is spot on I'm jealous!