>>532826648
It is anything from pandering/flirty/crushing on the MC. If it was platonic it wouldn't have been a big deal, nor would she be that relieved from the MC's opinion specifically (not Yuzuha's) before wiggling her ears in glee.
This one single interaction (and every single other one I previously posted) alone is already a hell of a lot more more than anything they've got between each other throughout the entire story in terms of canon explicit pandering/flirting