Comments are funny because there's complaining about this being a rip of Sayonara Alpha but this doujin was done like two years earlier and clearly the mangaka liked the idea enough to explore the concept of "meeting too soon" with original characters. In this, they were distant enough from canon Eren and Levi to basically just be names. Nothing wrong with taking an idea you've had and redoing it, but better, with more depth to it.
Comments are funny because there's complaining about this being a rip of Sayonara Alpha but this doujin was done like two years earlier and clearly the mangaka liked the idea enough to explore the concept of "meeting too soon" with original characters. In this, they were distant enough from canon Eren and Levi to basically just be names. Nothing wrong with taking an idea you've had and redoing it, but better, with more depth to it.