@Vegetablesucks But they ALL look like mothers on the first page. Different kinds of mothers sure, but still mothers.
@Nayrael So you are 80% sure that Yotsuba will be the bride? Because it said that the kiss was when he first started to see the other person as special, which pretty much takes Nino out of the running. Because if it all started with this girl at the kiss, then the confession didn't impact his feelings enough for the marriage but we have already seen that the confession has impacted his feelings towards her. I am probably wording this poorly but I hope you understand what I am trying to say.
It can't be Ichika because she has turned into a snake, and when that gets out Fuutarou won't jump her to the wife position. So she is definitely the least likely to win. Miku is too shy and is constantly stopped herself from making progression, and her personality would have made it obvious she had kissed him in the chapters that followed it because she probably would have been quite giddy. That only really leaves Yotsuba and Itsuki as the only two who really fit the kiss and subsequently married position.
And if we are being honest, Itsuki was the girl he met in the past, the girl he has stated that he already loves. So she basically is going to end up the wife. I could be wrong though, one of the better girls could win, fingers crossed.
Miku and Nino are the best girls.