Arigato not arigatou sorry... At the end of 1-4, there is a broken 1-4. You can jump to the first step and jump after landing, so you will hit the wall once instead of four times (1.5s can be saved) After the big jump at the end, there is a terrain composed of five exclamation point bricks. You can fall on the first step and jump, so that you can pass this area without slowing down (0.2 seconds can be saved)