If you were to have the girl he's betrothed to (who we assume is happy with this arrangement), a girl from an "own choice" marriage culture who thinks betrothals are a violation of free will, a madam who's not really the committed relationship type, and a divorcee with child, then you'd have a cast of characters with myriad views on marriage and relationships. Obviously different ages too, to contrast the youthful fairy tale idealism of marriage to someone who's there/been there and knows that it ain't happily ever after.
But that's too cerebral and deep and stuff. Scripting relationships well is difficult and more people would buy cosmic harem #5 than a treatise on the myriad views of marriage. We'll probably have the betrothed wifey (good girl), the childhood "friend-zone" girl (probably the clumsy girl), the alluring mentor (mysterious woman), and the tsundere (aka tough girl with a soft side); or whatever permutation of anime or love-adventure archetypes exist. All in an interdimensional harem comedy of errors with plenty of teeheehee double entendres and panty shots.
Whatever, we'll see what becomes of it. If it's a cotton candy RPG, hey, at least let it be the cottoniest candied RPG.