Prediction: The 4* coupling with Kokoro in band story 3 will probably be Kanon, also because of the tiara which NO ONE other than her has in the costumes AND some cards having her as protagonist like in Hagumi's... My stars will be dead once it gets to EN y'all...

Also the card she has IS SUPER PARTICULAR, and honestly looks like the event will be also focusing on her improving and looking back at her old self?... Or an identical twin