Something I find interesting is how Nico conveys as much about Asuka's state of mind through the art as they do through her dialogue and thought bubbles. She's obviously tense about Tomoko not calling her and if you notice, when she approaches Nemo and Yuri she's clenching her hands. Probably worried about Tomoko calling them and not her, but when she hears Tomoko didn't event message them, she finally relaxes. Just to get pissed when she hears Tomoko called this "Yuu".
People are calling these reactions obsessive and possessive, but they seem perfectly natural in a teenager, hell, I was on Katou's shoes back in HS. Now the question is to see how this will develop, probably Asuka will confront Tomoko about it, like she did during the visit to Aoyama.
