The man of brightness (jojo bizarre adventure X demon slayer

Arriving at Japan

Ok so I know that part 1 of jojo takes place far after the end of demon slayer but lets say everything is the same but happens in the same time as the story of demon slayer ok?

Johnathen joestar ran up a fleet of stairs along side his comrades wolf, straizo, tonpetty and speed wagon charged the top of castle that looked over the entire town that dio had mostly turned into vampire's

The doors slammed opened to reveal nothing but a a regular vampire, the group ran towards the vampire who attempted to flee but got grabbed by wolf and straizo

Johnathen then walked up to the vampire who growled at Johnathen, Johnathen looked at the vampire who had a face of fury

"Where is dio?!"
"Like I'll talk to some shitty humans!"

Wolf then breathed in as hamon traveled to his arms up to his palms as they start to melt the vampires wrist which made the vampire screech

"I'll asked again.......where is dio?!"
"Better talk, hamon is like being burned by the sun itself so I suggest talking"
"Ok ok! H-he fled to Japan!"
"Japan?"

The group said in shock, Japan was faraway and was forbidden from outsider or insiders to leave and to enter, dio had fled their because he knew it would take Jonathan to long for him to reach as well as time for dio to gain his strength and army to it max

"Damn it! We had dio in the palm of our hands!"

Speed wagon yelled angrily frustrated that dio caused most of the towns people to be turned into vampires so they had to kill mostly all of them

"Well I cannot go there as am to old and the rest of the hamon tribe needs to eliminate the remaining vampires dio left, Johnathen can you go alone?"
"I can"
"Good, am sorry to leave you the burden of finding dio but before you go I must tell you something"
"What is it?"
"There's monsters just like vampires but they eat humans instead of drinking their blood, that's all I know do be safe"

Johnathen nodded as he kills the remaining vampires in the town

Time skip

Johnathen was currently on a ship heading straight to Japan, he took most of money that he inherited from his father as he would be sent more from speed wagon who started his business not so long ago

He kissed erina as he would be gone for a long time, he remembered those things as the captain of the ship walked towards Jonathan

"Mr. Joestar, another ship will pick you here. Sorry for the constant changing of ships"
"It's alright, I know it's not your fault"

Johnathen then waited for a few hours as from the middle of the fog a small ship appeared and floated next to the ship Johnathen was on

"Please hurry, the Japanese army will look here soon"

Johnathen then walked near the end of the ship as the captain placed a large wooden plank and connected it to the smaller Japanese ship, Johnathen was now on the ship as it disappeared into the fog

A few hours later Johnathen's ship docked and he got payed the captain and got off the ship before heading straight to a city name asakusa, he walked down a dirt path as he saw the bustling city

"So beautiful even at night, so where is my apartment?"

Johnathen had learned Japanese before he sailed to Japan and could speak Japanese perfectly as looked around reading the signs but he couldn't find the apartment building he was living in for his trip

Sighing he continued searching but found nothing in till he heard yelling, he walked through a crowd seeing a teen holding a man down but Johnathen's eyes widen