I saw a lot of Helltaker fanfiction and decided to take a stab at it and up it a level by making it a crossover with our best boi, Okuyasu. Because a harem adventure to hell is just something our loveable idiot would do, in my book anyway.

I don't own JJBA DIU or Helltaker, enjoy.

Chapter 1: A Hellish Journey For The Greater Pleasure!

It was just a simple day in Morioh, everything was slowly returning back to normal after Kira Yoshikage's death. For the usual gang and protectors of Morioh things were okay, for most of them. Currently the whole group included Josuke, Okuyasu, Koichi, Yukako and even Rohan was there. Right now they were at a cafe, Koichi and Yukako were getting all lovey dovey while Josuke and Rohan had girls fanning over them, Okuyasu was the only one that was alone. He tries not to focus on that and simply enjoys his time with his friends and Rohan, but it was hard when it's thrown in your face.

It was something that he was used to, even before he meant Josuke he just wasn't a hit with the ladies and seeing Josuke shake the girls advances like it was nothing only made the string worse, plus with Koichi bagging a girl like Yukako didn't help, even though Okuyasu was fine not dealing someone that crazy. But seeing Rohan get the ladies attention generally confused Okuyasu and made him wonder what was wrong with him?

This kind of thinking only hurt his head and heart so he shrugged it off. But he did feel lonely and wish a girl would take interest in him.

Okuyasu: "If only…" He thought wishfully.

The day was getting late and Okuyasu needed to head home, he got up and bid farewell to his friend and left. Okuyasu stopped at the store first then after picking up groceries he walked through the door and checked on his dad, his father was doing what he normally did and was sleeping soundly with the family photo next to him. He then put the food away and headed for his room and lay down, he closed his eyes, his last thought was to be a ladies man like Josuke.

Later that night, Okuyasu was stirring in his sleep. Then his mind was subjugation to an intense series of images! The first thing was a dark red skies full of pitch black clouds, scorching fire with glowing chains and a rocky cave-like landscape. Next were bone-like golem, white and gray demons. After that he saw seven strange symbols that he couldn't understand, a pitch black book with a red demonic circle and skull in the middle, weird stone, and a red carpet. Finally, he saw 8 sexy black silhouettes with red eyes and one with blue eyes and a white ring above their head, then one more with grey and white eyes appeared before him and had two chain wrap around his neck and snap it!

He woke up in shock with his body drenched in sweat, he was panting and had a concerned look on his face, he subconsciously touched his neck. He wasn't even sure what it was he saw, he was so confused now.

"Was that a dream? A vision? Or… some kind of warning even." Okuyasu said.

He got up and splashed water on his face, he looked at himself in the bathroom mirror and was trying to make sense of what he had just experienced but a strange and primal instinct was calling out to him, a strong urge to build a harem overtook him, but not just any harem, a harem that surpassed logic!

He shook off the feeling and walked off back to bed but his body couldn't rest. He groans and hearing the sound of scratching from elsewhere, he get up and checked on his father and the moment he opened the door the mutant parent ran from the room and was in Keicho's room, Okuyasu followed and saw him scratching at the closest, Okuyasu wasn't sure what his dad was trying but opened the door and his father went through some clothes and pulled out a old brown journal, Okuyasu raised a brow and observe it. It looked like a regular journal, he opened it and saw a message from… Keicho?

"What the? Keicho, this was his journal? When did he get one?" Okuyasu asked, confused. Begin to read the message.

Dear Okuyasu, if you're reading this then that means I'm dead. I'm leaving this message because the stuff in this journal will help for what I tell you next, I was looking into some of the stuff our dad bought with the large amount of money he got and found out he spent most of it on a red carpet, a couple of stone with weird marking, a pith black book. I don't know what he was planning but I believe it involves… connections to the Underworld! Or something like that, whatever he was planning was never finished, I think he hid the stuff he bought in the basement. I'm sure why I'm leaving this for you, but whatever the case it's up to you to do with.

Love you, Keicho

Okuyasu was tearing up and wiped his eyes, he looked through the notes that were in Keicho's notes and saw the research he did with the items his father got. There wasn't much about the carpet or the strange stones, only the fact they reminded him of the ones in his dream. But the book was different because it wasn't just any book, but a Demonomicon and it turns out his father paid a lot for it, the reason why is beyond his understanding.

He heard more scratching and figure it was his father trying to get into the basement, he closed the journal and followed the sound and saw his father scratching at the door, he open it and walked down the old wooden steps until he reaches the bottom, it was dark so Okuyasu turn on the lights but the room was dimly lit, he saw his father bring him a old briefcase the punk raised a brow and tries to open it but it was locked so her used The Hand to help open it and saw it was the red carpet and weird stones, he look at his dad but the mutated man was scratching at the stone floor on the farther side of the room, he check it out and was barely able to see anything he saw his father point at the spot, Okuyasu break the groundmapart with his Stand and found the Demonomicon, the book had a dark aura that sent a shiver down his spine.

"Is this what you wanted me to find, pops?" Okuyasu asked his father, the creature only squealed. "But… why?" He asked, but his pop was already sleeping again. Okuyasu was more confused than ever but the same primal instinct took over again and he could feel the answer just boiling up inside of him. "I think I understand, that weird dream, this creepy book, and my intense passion for a harem. I get it now." He told himself. "I mustn't build just any harem, I must build a demon harem!"

Okuyasu picks up his dad and walks out the basement and places him back in bed, he opens the demonic book and looks through it to find the answers. He learned of a somet kind of a ritual that would open a portal to Hell, all Okuyasu needs was to have a item that was completely tainted with sin, he looks at the red carpet and shuddered, a demon symbol which the carpet also had, and the blood of a virgin, that made Okuyasu sigh but he continue the ritual and cut open his palm and let his blood drip on the demon circle of the red carpet, the last thing was for someone to chant the ancient tongue at exactly at midnight, Okuyasu check the time and it was only 11: 50 that only gave him a few minutes.

"I better pack before I leave, don't know what may happened." Okuyasu told himself.

The punk went to the kitchen and packed up some food, mostly the Frittelle Di Cioccolato he got from Tonio, some water, and some cooked ham. He saw the time and it was 11:55, it was almost time for him, he check out his dad's old room and saw nothing much except for one of his old suits that was black and dark blue with golden detail, Okuyasu wasn't much for those things but he shrugged and tries it on and it fit him well, he then packed a first-aid kit as well for safety. Okuyasu headed down stairs and it was already 11:58.

Okuyasu only have 60 seconds to finish the chant and not a second more, so once it was 12:00 the punk begun to chant the ancient tongue with some mild difficult but he was able to get it down, at first nothing happened and thought either he was a second late or it was a dud. But then his house shook a bit the demonic circle begun to glow a dark red color his blood move and formed a star and glow bright red, then everything turn white for a bit and after that everything was quiet, Okuyasu look at his handy work and saw a crimson and black portal in the floor, he look down it but it stretch out further than the eye could see, he really opened a portal to hell, this was it.

"Well, I guess I better get a move on." Okuyasu told himself, he had a bag packed and placed the demonic book inside and took a deep breath. "Alright, here goes everything, I have to say this is stupid even for me,oh well. Demon Harem, here I come." He stated, then jumped in.

The demonic hell portal swallowed him in and closed once it ran out of blood. Now begins the hellish journey to build his harem, many dangerous and deadly awaited the punk but Okuyasu was going to have to hell by storm with his own hands!

Sup, and Happy New Years to all of you lovely people. First, I know that I said I release chp 20 of Jojo's Bizarre Adventure: The Red Thread Of Fate Continue but it prove to be longer then I expect with all the fighting and it will take me more time to finished, and just didn't want to keep you all waiting that long, so here a new fanfic for you to enjoy. I'll update both Jojo's Bizarre Adventure: The Red Thread Of Fate Continue and JoJo Bizarre Adventure: The Unbreakable Super Girls Adventure soon along with this story. Take for sticking with me through the whole year of 2020, may you have a wonderful 2021. P.C. I made a poll for you about just the harem of JoJo's Bizarre Adventure: The Unbreakable Super Girls Adventure, so vote for your favorite. Review me on how you feel about this hellish journey Okuyasu going on, and as always thanks for your support!

Peace!