This trophy will unlock when you complete the request given to you by Young Gal. You will have to roll a katamari of at least 15cm in under 3 minutes. Because this is your first actual level it is very easy to complete. Just roll up everything you can on the table, then go up the ramp while still collecting everything then finally go down the ramp to the floor and roll up everything you can down there.
After finishing this request you can use all 3 of your candy tickets to unlock
You can replay this level to find Ace under the table you start on.
You can replay this level a second time to find a present. You will find this is you go up the ramp from the table you start on, then go right and go up the mask. The present will be on the back right corner of this area.