Grab hold of an NPC that doesn't run or fight back once you hit or tackle them. Do this near the North Point apartment. Once you are in front of the apartment door, let go of the NPC, open the door, but do not go inside. Then, try to grab the NPC again before you enter. Drag the NPC into the bathroom, then let go by pressing TRIANGLE or Y. Close the bathroom curtain or door, then go to sleep. Once Wei wakes up, you should still hear the NPC crying.