The training will always be apart of the game, and there's some characters where the slave route will be the only option.
But there will also be a choice between love or submission path for the main girls. In v0.06 on my patreon, I've already given players the choice between choosing either Lily's love or submission path.
I'll be releasing v0.06 of Terrene here on itch when I finish v0.07.