Not multiple. There is only one that will lead you to Kive route, all others will just end with death. And I mean yeah, she doesn't put you in chains or anything, but any being with conscience would have problems saying no to her. The way she treats MC gets him into an emotional prison with the fear of breaking her heart. I understand that she's not fully aware of doing so, but still.
Heh it would be cool to have an RPG version of the game, with the MC walking around along the giantess. It could be really good in my opinion, sorta like Monster Girl Quest, combining RPG and VN
Yeah but it would be nice to be able to walk around, for example, Timfalme and interact with npcs (giantess and normal size people). Each character with their own model of RPG maker, it could be really nice. And well for the part of the fights, since the MC is always (not always but mostly of the time) around at least 1 giantess, the fights could be from the perspective of the giantess.