Coai in formal clothing this time round. When they are in a formal/party setting, I imagine them to be observing people from afar and discussing their thoughts with each other.
hellooo @stockered! I was your secret santa for the @dcmk-exchange!
I decided to take inspiration from that one shot of Haibara in Strategy above the Depths, although I imagine this scene happening in one of the MANY other times the gang goes sailing