Celia saw the headphones, and picked them up curiously. There'd have to be a lost and found somewhere. Without her knowing, when she bent down, the necklace fell off, with Trixx asleep inside

Leon just hoped whoever found his headphones also didn't find his ring, which also had gone missing a little while ago, which would be even harder to find than the headphones. (I just remembered the kwami won't be inside the headphones since once the ring comes off the kwami would vanish too) At this point, Leon just wanted to escape the crowd.

Celia sat under a willow tree to read, setting the headphones in a plastic bag. Plagg crawled out of the bag.
"Leo-" He said, pausing. "You are not Leon."

(She'd have to put the ring on first, plus, Plagg wouldn't give up his name that easily ;p)

Leon finally escaped the crowd. He sat near a fountain, hoping the huge crowd in the park would go away soon.

(Well, Leon is a pretty common name. If it was like Mr. Fheisksns Anna the third, it'd be obvious )
Celia fiddled with a ring she found on the ground. A cat creature popped out.
"Who are you..?" It asked

(True, but it would make it semi obvious since it appeared with the headphones)

Leon became slightly worried, but trusted that he could find Plagg without revealing his identity

(We should probably wait for poison before we continue)

(Okey dokey)

Nat walked towards the crowd, seeing leon,"Hey Leon!" She ran into the crowd, but was pushed towards the front and Duuso gasped, flying out of her pocket. "Duuso!" She hissed. Nat reached down, picking up a kwamii like figure and stuffing it into her pocket, then ran back to her bench.

Aldric checked his phone,"Crap! I'm about to miss the concert!" Tikki flew into his pocket and he ran to the park, trying to push his way to the front, but in the cluster, Tikki must have fallen out. Aldric crouched, trying to find his kwamii. He reached down, trying to find Tikki.

(Don't forget to lose tthe earings so everyone can get their awkward matchups)

Leon turned, hearing his name called. "Nat? Was that you?" He called out. When he stepped forward, he felt something under his shoe. He moved his foot, seeing a strange peacock brooch. Leon picked it up, putting it in his pocket for safekeeping as he attempted to escape the crowd

(Opps, sorry)
Nat felt her hair, her pin was gone. "Crap.." she whispered. She reached in her pocket and pulled out a pair of black earrings that she found on the ground and put them on. She felt the weight in her pocket go away and a ladybug kwamii appeared on her legs,"Double crap." She turned, seeing Leon again. "You are Tikki, right? Get in my pocket!" She then turned and walked towards Leon.

Aldric saw a fox tail necklace on the ground and picked it up. He escaped from the crowd and ran home. He put on the necklace to think of where he had seen it before, but then a fox kwamii appeared in front of him,"C-" She stopped, seeing Aldric and stared wide mouth.