Peter Pan's abilities/skills-
Flight through fairy dust
Eternal Youth
Regeneration
Enhanced durability and strength. (Although in One Piece terms this would just make him normal.)
Enhanced Senses: Keen hearing, vision, smell. Most importantly sense danger (Similar to spidey sense or advance observation haki.)
Strengthen beliefs- What he believes in is more likely to happen just because he believes. (For example if he believes he can win a fight his opponent may receive a de buff or he may receive a buff.)
Communication: He can understand and speak to magical creatures. These creatures also have a natural like to Peter Pan- Merfolk, Fishmen, Minks Etc.)
Voice Mimicry: Can Perfectly imitate voices and sounds.
Shadow Consciousness: His shadow can think and act on its own. It can detach from Peter and it has all the abilities that Peter has.
Swordsmanship- Highly skilled with daggers and swords.
Don't expect frequent updates and new chapters. I add when I am inspired or have time. As for my other fanfic same thought process.