Do people in these comments not realise that love is on a spectrum? Some of you make it seem like it's binary and it's either platonic or romantic.
You all sound like you've never had love, or only experienced one kind of love.
Harumin loves Yuzu with all her heart, but projecting that to explicitly mean romantic love shows a massive amount of immaturity and inexperience.
Until it is written in ink, we are all just guessing, but the way some of you have convinced yourself that Harumin loves Yuzu romantically is nonesensical as it simply shuts off a the chances of further duscussions with others regarding the narrative. You've found a hill and you'll die on it. A pathetic narrow-minded mindset.
Harumin might love Yuzu romantically. It could be a familial type of love. It could be freindship. It could be anything. It could be nothing.
All we know is that there's a hint of jealousy, a hint of abandonment, a bit of confusion and a lot of concern. All emotions that come with loving someone, no matter what form that love takes. It's also things Harumin has started to show towards Matsuri.