I'm afraid that at a stage when the characters have already been thought out, it would be unwise to change their preferences. You can change the course of events by adding some details, but changing one trait that is in harmony with the personality as a whole would oblige the author to rethink the character.
You could suggest introducing new characters, but I would be careful with such ideas, because there are already more than a dozen main characters and many more side characters. It's one thing to create a story along the lines of an anime - there are specific types who respond and act in a specific way. Everything is predictable. Here, however, the author creates his own template.
Although the decision to make such risky personality changes or add characters is up to the author anyway.
To me, the development of this game already looks like a highly ambitious madness, balancing on the verge of creating something between a utopian dream, introspective observation, and erotic fantasy. And I'm fascinated.