Pretty intriguing start! I've gotta say I've never seen this concept before. It's fun.
Some minor things that I think would make the game even better are tweaks in the character sheet. It feels awkward to see my trans chara's birth sex listed as 'bodytype' (I say it's just an unnecessary line there, the pronouns are enough), plus I'd really love it if we could see MC's age listed there for each time period as the time jumps can get a little confusing.
Either way, I hope your passion for this project never wanes! I hope to see it finished one day :)