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Obtained: Speak with Urabe on the Toubo Rooftop.
Head to the Idolasphere in Shibuya and teleport to Block 2: South (2F). From there, jump off the ledge on the left and follow the path to the right. Just before the camera, take the two flights of stairs up and pick up the object on the ground straight ahead before the middle jump off ledge to receive a Treasure Key. Once you collect the item, head back to Urabe on the Toubo Rooftop and speak to her to complete the request.
Reward: Kiddie Candy
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