woah, your guess is pretty much spot on! initially i thought i did a very poor job in trying to represent various aspects of development for the gameboy advance through the characters, especially considering gba doesn't have a dedicated gpu, but i'm really glad someone pointed this out! thank you so much for your kind words!! 💕
(as for the point of the game, it's much less of a ddlc reminder and more of "what if i put my already existing characters in a suzumiya haruhi meets mean girls's mathletes kind of setting and make it a vn", haha)