[All timestamps are referring to my 4:15 run ] The fastest theoretical route is doing the drop diamond at 1:17 in the bottom middle of the screen, skipping save 4-7, however i do not know if that is a possible jump

The fastest confirmed route envolves doing the bundo jump at 1:32 in the right middle of the screen, it skips half of save 3, save 4, 5 and half of 6 (is risky, long, saveless, but it is faster than the normal route) After the bundo jump, exit the rooms in this order: left, down, right (the one with the upside down save), down, right, down and your at the last save.