SaGa 2 as it is known in Japan is probably my favorite Game Boy RPG overall. This gorgeous box cover is essentially a color reverse of Final Fantasy IV's SNES box. It's simple, effective, and leaps off the shelf. I don't think I ever saw this in stores as a kid, and eventually had to emulate it circa 2000. Mostly during a move where I was staying in a motel for a week and played this alongside finishing Lufia.
I don't know if it's actually the best RPG on the Game Boy or if I've been overrating it all this time, but it's definitely one of the best SaGa games. It takes everything that made the previous game good and improves on it. Let's see if I like it less after playing it again... hopefully it doesn't show its age as much as the first one did. This is a prime candidate for "leaving the memories alone" but here we go, my second playthrough ever.