For Sage there arent really any changes. Chick, Dik, doesnt really matter... only very slight changes in the sexscenes cause some actions are ruled out if the MC is not a dik. If you refuse her the whole time and only start somethign with her in ep 7 or not doesnt matter either, but it feels VERY odd.... like... seven episodes "nah i dont want Sage" and than... "oh come on lets start something serious", its weird...
Either way, the biggest difference as chick or dik with Sage is... you can have a threesome with Sage and Quinn as a dik. That is not possible in a chick run, but only cause Quinn is not interested in a chick MC. So....yeah... Sage as Dik or Chick doesnt really matter. Wouldnt be surpised if there are some more Threesome (or even more girls involved) opportunities wth Sage along the road, maybe for a chick MC too, like with Lily for example would be a good fit, or MAYBE even with Josy and Maya? Dont know but Sage is obviously the one Maingirl who likes to "share" the MC in consent.
But overall that feels odd to me too, there are enough sidegirls who dont want something serious with the MC and would share him with anybody... for a serious relationship with Sage in the very early stages, this is just... strange. Which is the reason why i dont like the Sage path that much. It just doesnt feel right to me, it has its moments, even romantic ones... just to kill those moments all together one scene later. I cant take the relationship path with Sage serious, it doesnt work that way. Yeah its a porn game, but a porn game with at least some kind of "Standard" to not to be too dumb about the porn fact. About dumb porn scripts... we in germany are provided with a all time classic in porn history
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Which kinda sums up 99% of all porn logic together in one little dialogue. And i dont like totally dumb porn. And the Sage route does provide "dumb porn" logic just way too much, just like the threesome with Quinn out of the blue.