I managed to improve the last level of this run by a few frames using the walk into walls glitch to scroll the screen a bit faster and get an improved boss fight.
This run is technically longer than the original, but this is mainly due to emulation differences, especially lag in level 3. Additionally the original is made on VBA and does not sync in modern emulators, even in original Gameboy mode. This run on the other hand is console verified.
I believe the improvement in the last level is sufficient to make this run preferred overall.
ThunderAxe31: Claiming for judging.
ThunderAxe31: 1 blank frame removed at the end.