Hello again,
Posting about this here, in case anyone can help and fix the game. In the MSX2 game Nyancle Racing, whenever you beat a level, you switch to another racer/car. This is nice and all, but there's a couple of times when choosing the yellow racer causes the game to be unbeatable (green, red, and blue racers are all fine, as is Nyancle himself).
This bug doesn't happen immediately when you choose the yellow driver, and it only happens on certain courses (courses 2 and 4, at least). But when it happens, it happens every, single, time. You play a level normally as the yellow racer, but once you finish that level and you're supposed to switch back to the Nyancle, this happens:
Nyancle, who you're supposed to reach to get to the next level, is suddenly stuck on the top-left corner.
I don't know why this bug only happens with the yellow racer specifically, but I've noticed that he magically does have a much better side movement speed in some levels, even if you don't have any Steering Wheel items. This might be somehow related to this bug.