Thanks for playing and commenting!! 💕 We'd definitely like to add some little animations like this to the character sprites at some point in the future. Cailean's tail might be a little lower priority because it's often hidden behind the text box or offscreen, but we're definitely considering it!! Other animations we'd like to do include movement for Cailean's ears and Nikolai's face feathers, and additional poses for characters that don't have a lot of potential for casual motion, such as Deka and Vivietta.
I don't think we'll be able to put it in the game, but you could write that scene idea in a fanfic!! I would love to read it, it sounds very cute! (You can also check out what other people have written here!!) ✨ Thank you so much!!