Comic Con is definitely two words. This term has been established and widely recognized in that form when referring to these kinds of events and gatherings.
There was a haunted forest where a strange 'one two one two' could be heard. A hiker got lost in the forest and started to follow the sound, thinking it might lead him out. But as he got closer, he saw a figure emerging from the trees. It was a ghostly apparition, marching in a 'one two one two' step. The hiker was so scared that he ran blindly until he finally found his way out of the forest.
Sure, One Piece is a comic. It has an elaborate storyline and diverse characters that have captured the hearts of many readers. The comic has been running for years and continues to be a favorite among comic enthusiasts.
I'm not sure specifically as there could be various interpretations. It might be a way to structure the narrative, like counting down to a significant event in the novel.