>>521544523I'll attempt to answer them along the lines of what is generally agreed upon, but understand that all fankid lore can be listed as theoretical
>Greene should be Amber's younger brother, not her twin.Presuming you mean this in regards to the photo in the E4 epilogue, it is generally presumed that is Samantha/Ember, the eldest daughter that uses the first pass Fang design.
Amber and Greene are born some years later as twins, and then some years after them comes Joshua (though there is some discourse of whether to include him)
>Melissa should be older than most fankids, since Naomi already has children in the epilogue. At the very least, she would have to have several older siblings.Naomi and Kanyesauraus have had 4 children by the E4 epilogue, and it is not too much of a stretch to assume that they may have some more. Melissa could be child number 6, 7, or 8 for all we know. Her family can afford to have a large family.
Now that I think about it, it would certainly be one thing that can be added to Melissa's character. The feeling of being a child in a large family can, ironically, give one a sense of being alone or overlooked. As such she could retreat into books and dream of a prince charming that would see her in the crowd and pick her out from amongst them.
Something to keep in mind for later.
>It doesn't make sense for Rosa and Naser to be married based on the events of the games; at the very least, they should have started dating after Nasser finished his studies.So they started dating after he finished his studies. Or in the years during the time skip, where a great deal may have happened off screen. We just don't know for sure. It's not really a hurdle. Biggest break from immersion is him and Rosa only having one child, but that can be head canon'd as Naser just being really busy.
>Why they are all the same age?Convenience. If you want to get into the nitty gritty of it, there is an age range of + or - a year from the average.