Hi, I'm very sorry for being late for this one but I think you'll like it. 
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(y/n) walked to house to house for treats. She got her self-dressed as a half tiger and half human. She had blood trickling down her mouth. The first house she went to was....

Trafalgar D. Water Law 

(y/n) was about to knock the door until the head that had a cap that says 'Sachi' spoke. 
"Captain, a trick or treater!" it yelled.
(y/n) was rather frightened. A head on the door. It spoke to a person inside.
'It can't be a real person. This person probably got stuck in a door hole.' (y/n) thought as she tried to calm down. 
The door then creaked open. There was nobody on the door. Suddenly a man with a Skelton makeup and a doctors costume came out with a heart. A beating heart.

"Trick or treat!" (y/n) said with a smile.
In the inside, she was dying. There were 2 bodies with holes and no head. 
"Well, I choose trick." Law said.
(y/n) kind of panicked but then thought of an idea. She jumped letting her (h/c) hair follow her. She grabbed Law's coat and pulled causing him to fall. Then she tickled. Her fluffy hands was making it worse for Law.

"Mph... stop... you... haha... brat.." Law said between laughs, "I will give you a treat."

(y/n) then stopped and got off. Her fluffy hands moved in the air. Law then got a heart  out of his pocket and then gave it to her. 

"Here, a heart chocolate." Law said as he gave an actual chocolate. 

"Thank you." (y/n) smiled as she walked away.

"Room," Law muttered, "Shambles."
Sachi then noticed this and panicked. In his hands there was a heart chocolate.
"CAPTAIN! You just gave someone Penguin's heart!" Sachi yelled. 
"No, it's punishment." Law said. 

(y/n) then tripped and the bag flew out of her hand hitting the floor.
"AAAAAAARRRRRRGGGGGG!!!" Penguin shouted from the ground.
He was placed there by someone.

"KKKKYYYYAAAA!!!" (y/n) screamed as she ran away. 

Law only gave a chuckle at this. It was a great view to be exact.

-------------May be I'll add characters later but here ya go. Bye bye. 
Happy Halloween!!