The Princess has a kind of submission fetish, so personality wise she will remain mainly the same bratty character, even while going along with training. Gwynn will undergo SUB training at the institute and change somewhat. The Queen goes along with the training in transactional way.will the behavior of the characters change too, besides them becoming more accepting of sexual acts?
i mean lets take the princess for example,.. she behaves like typical spoiled bitch.. will that change with higher submission?
So in short, it depends on the character.
There will be an ending with Evil Irith, where her personality changes drastically. V0.8 or V0.9.
And there will be a harem ending in V0.9