Yeah but yotsu chan has the highest chance rn.
Ichika has a death flag because of her miku stunt
If miku goes on like this then she'll also lose
Nino and itsuki played are toying with him and being too pushy (itsuki being the rena stunt)
Yotsuba is the only one who's actually supporting him and trying to help him even if it's because of her inferiority complex.
Honestly it all boils down to whoever fuutaro fall for first and in this case yotsuba is a perfect candidate