[...] Why would Emma do this if she's NOT in love with Suzu? Nako also seems to love Suzu so I think a nasty love triangle is what's going to happen
To be fair, we don't know anything about Emma's backstory, unlike we Suzuran, her past and present is basically all hidden, and I do think we might get a more precise look at her behaviour by knowing it...
Apart from that, a nasty love triangle is not out of the picture, and I'm all in for it!!!