Chapter 1: A Trip to the Land of Illusion!

New York City

The city that never sleeps. It is the home of several superheroes who dedicated themselves in saving the world from any and all threats. The Avengers, X-Men, Fantastic Four, Daredevil, and of course, our most beloved superhero of all...Your Friendly Neighborhood Spider-Man!

Four months has passed since our friendly neighborhood webhead defeated Doctor Octopus atop the Oscorp building and because of his actions, the city of New York has been at peace ever since. However, despite all that, he is still swinging around New York to help the people in need. After all, a hero's work is never done, as they always say. While swinging around, he receives a call from his phone, which he quickly picked it up and answered the call.

"Peter, are you there?" The voice spoke.

"Oh, hey MJ. What's up?" Spider-Man asked.

"There's something you should know..." Mary Jane said.

"What is it?" Spider-Man asked.

"The Inner Demons. They're back." Mary Jane informed.

"Those guys again? Man, even after I defeated Martin Li, these guys are still out there." Spider-Man said. "They just don't know when to quit."

"And what's worse, they're now working with the Maggia and had situated themselves in a base near Hell's Kitchen." Mary Jane continued.

"Hell's Kitchen? That's Daredevil's turf!" Spider-Man pointed out. "What are they doing there?"

"I don't know, but since this is the Inner Demons we're talking about, I can already tell they're up to something." Mary Jane answered. "You might wanna go there and find out!"

"Alright, I'll go over there and see what they're up to." Spider-Man told her. "Who knows, I might run into HIM on the way."

"Yeah, I hear he's on the move against the Inner Demons. Like you said, Hell's Kitchen is his turf, so he can't just ignore it." Mary Jane said. "Oh, and tell him I said 'hi'."

"Fine, fine..." Spider-Man said before ending the call. "Alright, time for a short visit to Hell's Kitchen!"

And with that in mind, Spider-Man sets off a journey to Hell's Kitchen for answers involving the Inner Demons.

Hell's Kitchen

A place where nefarious activity are more common than any other place in America. It is the home of not Wilson Fisk, also known as the Kingpin, but Daredevil as well.

In a secret base located somewhere in Hell's Kitchen, we see several scientists working on something. Watching them from above are several members of the Inner Demons and the Maggia.

"Keep it up, you guys! If we don't finish this project, then we won't be able to achieve our goal!" A scientist shouted.

"Are you sure this will work, sir?" One of the Inner Demons asked the scientist.

"Of course it will!" The scientist answered. "Wilson Fisk entrusts us to ensure that you will get what you wanted, in exchange of working for him."

"But don't you think we're not safe here in Hell's Kitchen?" The Maggia grunt asked.

"Yeah. As if Spider-Man wasn't enough, now we have to deal with the Devil, as well!" The Inner Demon nodded in agreement.

"Don't worry, our base is well-hidden and well-secured. Not even S.H.I.E.L.D. can pinpoint it through their satellite camera!" The scientist assured them.

"I hope you're right..." The Inner Demon grunt said.

"Besides, even if they do find out about the base and enter it, our sentry turrets will ensure that they won't be able to get out of the base alive!" The scientist added. "Now, get back to your posts!"

And with that, the Inner Demon and Maggia grunts proceed to go back to guarding duty while the scientist continue working on the device. Outside the base, Daredevil appeared in the rooftop right next to the base, which is actually just like a normal building.

"So, that's the secret base of the Maggia and the Inner Demons..." Daredevil muttered.

But before he could sneak his way to the base, Spider-Man arrives from the scene.

"Hey, Matt." Spider-Man greeted.

"You finally came, Spider-Man." Daredevil said.

"Sorry if I suddenly came to your territory, but I hear that the Inner Demons had a base in here." Spider-Man told him.

"Yes. It's right there." Daredevil points out.

"Wow...That was quick..." Spider-Man sounds disappointed. "How'd you find out?"

"I interrogated one of the Maggia members." Daredevil answered. "Turns out that the Inner Demon and Maggia work together to create some sort of a device that will allow them to cross dimensions."

"A device to cross dimensions...That's sound far-fetched, if you ask me." Spider-Man said.

"And to top it all off, Wilson Fisk is secretly funding the project. He even hired some of the best scientist around New York to ensure that the project will be finished." Daredevil added.

"Wow. They must be really desperate to go to other dimensions that much." Spider-Man said.

"In any case, we better stop that project before it's too late! Who knows what they're planning to do to other dimensions once they succeed." Daredevil said.

"I agree. Let's go!"

Spider-Man and Daredevil managed to sneak their way through the secret base. The inside of the base was heavily guarded by several Inner Demon and Maggia members. They kept sneaking around the base, but one of the turrets alerted to their presence and shoots them, but they managed to dodge them.

"Oh, crap." Spider-Man said in a sad tone.

"Looks like they have some sort of a turret around the base." Daredevil said.

"It's the Spider and the Devil! Get them!" One of the Maggia grunts shouted as he and the rest starts shooting at them.

"I'll deal with the turret! Spider-Man, you deal with the Maggia and the Inner Demon!" Daredevil ordered.

"You got it!" Spider-Man said before kicking one of the Maggia towards a nearby wall.

The two heroes began splitting up, with Spider-Man dealing with the combined forces of Maggia and Inner Demon that attacked him while Daredevil goes to the other side to disable the turrets.

"Alright! Which one of you wants to get smacked in the face first?" Spider-Man asked them.

Instead of a proper answer, they responded by shooting their weapons at Spider-Man, which he effortlessly dodged them all.

"No one? Okay then!" Spider-Man said before shooting his webs towards one of the grunts. "Guess I'll do it myself!"

He pulled the web, causing the grunt to be pulled towards him and punches him in the face before throwing the grunt towards a wall. One of the Maggia takes out the brass knuckles and closes in on Spider-Man, but he managed to evade the grunt's punches and retaliated by uppercutting him into the air.

"Nice try, but you'll gotta need more than a brass knuckle to squash this spider down!" Spider-Man said.

The Inner Demon and Maggia force continue firing on Spider-Man, but once again, he manages to evade every single bullet while shooting webs at them to immobilize them. He noticed a giant box just beside him and Spider-Man had an idea.

"Hey, fellas! I've got a present for all of you!" Spider-Man said as he shoots his web towards a giant box. He starts swinging around the box and throws it at them. "Catch!"

The box broke, releasing several weapons at their heads, hitting them and distracting them at the same time. Spider-Man used this opportunity to knock them all out.

"Did you like it? No? Well, too bad! That's the only one I had!" Spider-Man said before knocking them all out. "Whew. I guess that's all of them."

Just then, Daredevil appears in front of him.

"I see that you're having a lot of fun." Daredevil told him.

"Fighting bad guys always put a smile in my face, you know!" Spider-Man responded. "Anyway, how's the turret business going?"

"I managed to disable all the turret around the base. We should be safe from them." Daredevil answered.

"Good. The last thing I need is some peashooter that won't stop shooting at me..." Spider-Man said.

"Alright, let's get going!" Daredevil said as he and Spider-Man proceed to the big metal door.

Inside the big metal door, we see several member of the Inner Demon preparing to fight the two heroes.

"Oh, hey look! A welcoming party! Looks like they were expecting us." Spider-Man said as he points to the members of the Maggia and the Inner Demons.

"This is as far as you go! We won't let you through that door!" The Maggia member shouted.

"We'll see about that." Daredevil said as he takes out his trademark Billy Club.

And with that, the two superheroes in red starts fighting the remaining Maggia-Inner Demon force. Despite the forces outnumbering them, Spider-Man and Daredevil managed to defeat them one-by-one.

"Huh. That was...one hell of a welcome party." Spider-Man said.

"We've got no time to waste! That door right there might lead us to whatever it is their planning!" Daredevil told him.

"Right." Spider-Man said as he and Daredevil went towards the door.

When they get inside, the scientist that were working on a device were already gone.

"Uhh, there's no one here." Spider-Man noted.

"They must have escaped already..." Daredevil said.

"And risk leaving whatever device they built lying around?" Spider-Man asked.

"The important thing is: The project never came to fruition." Daredevil told him.

"Well, that and we managed to capture the remnants of the Inner Demons and some members of the Maggia." Spider-Man added.

"The police should be here shortly to pick them up." Daredevil informed them. "Now, let's destroy the device before-"

Before they could, they suddenly heard a loud noise.

"What was that just now?" Spider-Man asked.

"It must be coming from this machine." Daredevil said as he point to a big round machine.

"Is that what I think it is?" Spider-Man asked.

"No doubt about it. It's a portal device." Daredevil responded.

"Wow! They weren't kidding. Look at the size of that thing!" Spider-Man looked in awe.

Suddenly, Spider-Man's Spider-Sense starts to go off.

"Uhh, my Spider-Sense is going off like crazy." Spider-Man said.

"We need to get out of here! Now!" Daredevil told him as he realized something.

"Why?" Spider-Man asked.

"It's a trap!" Daredevil responded.

And as Daredevil realized, the portal opened and tries to suck both of them in. Spider-Man tries to use his web on a nearby wall to keep himself from being sucked, but unfortunately, it gave off in the end and was sucked into the portal.

"Peter!" Daredevil shouted.

Thankfully for Daredevil, the portal malfunction and was destroyed in the process.

"The device destroyed itself? This is going to be a problem..." Daredevil wondered. "I need to inform the Avengers about the situation."

And with that, Daredevil took his leave while the police arrived in the building to arrest the Maggia and Inner Demons.

Gensokyo

Also known as the Land of Illusions. It is a place that exist within a pocket dimension, separate from the rest of the world. In this place, not only humans live here, but demons, fairies and youkais as well and they're all co-existing with each other.

A certain red and white girl can be seen outside the shrine, sweeping around. This was Reimu Hakurei, a shrine maiden of the Hakurei Shrine. Reimu then lets out a sigh.

"As expected, no one visits the shrine..." Reimu said in a sad tone. "You know, at this point, I begin to think that I'm doing all of this for nothing."

She then looked at her donation box, which contains almost nothing inside, as you would expect.

"And no visitor means no money for me to spend." Reimu added. "Oh, well. At least I'm still doing my duty as a shrine maiden."

Just as she was about to enter her shrine, she felt something disturbing.

"Hmm? What's this I'm feeling?" Reimu wondered.

She looked around for the source until she eventually found it: from above. When she looked up, a portal pops up.

"Is that...a portal?" Reimu wondered. "Oh, don't tell me that she-"

Before she could finish, she heard a voice coming out of the portal. And sure enough, someone DID come out of the portal. Turns out it's Spider-Man who came out of it, I guess after being sucked into a portal, he was finally being released. When he realized that he was falling, he tries to shoot a web towards a nearby tree branch, but unfortunately, it ran out of fluids.

"Oh, come on! Of all times to ran out...!" Spider-Man said before looking down at Reimu. "Uhh, incoming!"

A/N: And that's it for Chapter 1 on this fanfiction.

If you're wondering, this fanfiction took place 4 months after the main storyline of the game, not counting DLCs like The Heist and Silver Lining.

Even though it's primarily Spider-Man, other Marvel heroes will make their appearances here in this fanfiction, like Daredevil. As for them entering Gensokyo...you'll just have to wait and find out.