>>1771
http://yume2kki.wikia.com/wiki/Effects
Follow the instruction for getting the invisible effect BUT, instead of "Go[ing] straight ahead in the bowling alley" , go up the left lane and interact with the triple pins at the top.
When you do, you will be transported to the closed space in the bowling world you were previously in (with the runaway balls and pins) with the pink bowling pin. Interact with this pin and you will be transported to a hallway with windows.
As soon as you are in this room you will see a sane shadow lady walking to the left; follow her (you won't be able to keep up though). You will see a window with a black spot on it; interact with it (I don't know if it is required but I did it anyway) keep going left and you will eventually see a slow ghost version of Urotsuki (if you're normal she's normal, if you're on the bike so is she). Keep going left and you will see a black man and a black window next to him. Interact with the window. You are now in the neon version of Madotsuki's room. When you get out interact with one of the windows with silhouettes and you will end up at the top right exit of the art gallery(!) (I wonder where the left exit leads from, if anywhere)
Oh and by the way, do you know how to find the little green guy that sends you to the world where you get the trumpet and the baddie bar? I can't find him in 93e.
Side note: In the Urotsuki's appartment world, two of the locked doors can be opened ( I think the other two are exit only). The top floor door opens with the glasses, the second floor left door opens with twintails.