I have a lot of ideas on how to flesh out this game @indivi if you want i could provide some input i just have too much to mention
well for starters a way that when fawn puts the player through pain before fleeing to upper new arc the player can take it and start a masochist/pain slut branch during the outing with fawn when in shibiri rope you can go into a public humiliation type route have the option to get or become a slave to the don become a sub to another inside the torture rack make fawn into various different kink type things sub related add hair or lack there of type fetish add new hairstyles into it add new ways of being enslaved by rinny have her become your slave add new bad endings that might come from those choices add a lot more magic that can manipulate lust in various ways or enhance stats temporarily add self bondage type things add a part where you wander into this area and get enslaved held in some kind of dungeon/prison/asylum type of place that you can use your skills to get free or even take over or even accept your new circumstances and your new life maybe something ponyplay related theres quite a few things just off the top of my head and add some branching paths for this that the player can better choose to go down
Sorry about the length of the reply I did warn I had a lot of ideas I may stick to one idea at a time moving forward. Ok so in regards for the fawn storyline: during the part where she tortures you have a way to endure your way through and gain something to do with masochism with new quests and/or activities regarding that. During the outing with Fawn dealing with public humiliation gain access to more activities to do with that or even become more outright open with it. Some new hairstyles long short and none at all would be nice maybe some aspects of hair fetishism involved maybe? Some new branching paths or some new possible outcomes would be nice. I understand the time constraints of doing all this I've dabbled a little bit on rpg maker mv and it's a bit complicated, but I only ask that you take my suggestions into consideration moving forward I trust you'll provide some interesting content btw very nice job on the game and best wishes