When you first arrive at the House of Truth, go to the hallway outside Lorenzo's Room but don't enter his room yet. Go down the spiral staircase and collect the Golden Candlestick, then return to the 2 vases at the hallway. Kick the vase on right and a Luminescent will be free. Guild the Luminescent back to the West Garden and go down to the area where the explosive is placed. Stand on the platform under the lamp and a cutscene will play.If you do it correctly, Lorenzo will be invisible in the cutscene. You can also bypass the old Lorenzo's boss battle and the scene where you got trap in a room. Lorenzo will remain invisible and never chase you but this glitch will last up to the final boss battle, unless you get yourself trapped in the room. Because Lorenzo will return after the cutscene where he turns young.