The concept is intriguing! I love how you heavily and eagerly set the tone from the first ending. I finished the entire endings in one go, I cannot put it down like a page-turner book. The way you have to start the game over and over with different scenes that stacks up the tension and psychological horror of what to comes next is really something. The way you actually wrote the MC is well done! The characters don't feel flat at all. With that said, I love the True ending the most simply because it just ties everything up like a ribbon.
I renamed the characters based on Attack on Titan (if you deeply know the anime/manga) characters simply because I thought it would go well based on the title: Eren being the MC, Christa being the MC's friend, and Mikasa being MC's girlfriend. By this pattern, I'm sure you've figured out who's Armin hehehe. It doubles the gaming experience lmaoo.
I encountered no bugs or issues throughout the game, surprisingly, since I have quite a potato PC. Though the transitions and the flow of the text is a tad slow. Other than that, I had a great time with this game, worth playing after a long day of working. =v=