Seeing your skills and effort, I really hesitated going into ending 4 . Thankfully it wasn't as bad as I thought. Good game though, very realistic. It would be even more realistic if, after the final ending, the world flash-changed to ending 17.
Thank you so much for playing! I'm glad I didn't overdo it in ending 4 too. Ending 17 really would make for a good "bad final ending" thinking about it now!