Reminder -
Suisei's been a "fan" of Kanata since before hololive and even jumped at the opportunity to live with her.
She was also the one who started ketsudrum
After the fallout, Kanata later talks about turning down a "friend from school" who had feelings for her and that ruined their friendship.
https://youtu.be/yq__BVJt6_g Kanata tries to be friends with her from time to time, but suisei can't handle her rejection.
Kanata is always trying to get suisei's attention but suisei always ignores her.
https://youtu.be/HhzyAPTkzkw?t=7201 