(Disclaimer: I do not own Hyperdimension Neptunia or Kamen Rider Drive. I just own this idea and my OC. Please enjoy.)

A/N: This story kind of ties with my Drive Fanfic so to avoid spoilers as much as possible, I will give you the bare minimum.

(Celestia)

Neptune, or Purple Heart as she's called in her HDD form clashed blades with Black Heart, igniting sparks.

"Not bad." White Heart said as she was pushed back.

"Do us a favor and just die!" White Heart said, going in. Jumping, she went for an overhead strike, but Purple Heart easily dodged the attack, flying into the sky. "Damn you!" She went after him as Black and Green Heart joined in and teamed up on her.

"Prepare yourself!" Black Heart said as the three Goddess attacked from all sides.

"I won't lose!" Purple Heart said as she, with amazing skill, pushed back all their attacks. Black charged and they soon clashed blades again. Purple just guarded and deflected her attacks, waiting for the right moment before she pushed Black Heart back. She then saw Green Heart coming from the side and jumped back to avoid her attack.

"I won't let you escape!" Twirling her spear, she sent thrust after thrust before she and Purple entered a deadlock. However, this left Purple wide open for White.

"This is the end!" With an upward strike, White Heart disarmed Purple Heart, leaving her weaponless. She jumped for her weapon, but never made it as Green Heart had used her spear to keep her weapon out of reach.

"This is the end!" Black Heart said as she flew towards Purple, her weapon crackling with power.

Purple Heart crossed her arms and waited for the attack, but at the last minute, something happened.

*VROOM!*

From the forest, a barrage of lasers appeared and struck Black Heart, sending her flying.

"What!?" Everyone looked towards the forest to see who had done that. What they didn't expect was a very futuristic looking Mercedes-AMG GT car.

'A car?' They all thought as said car came to a stop. After that, the door opened, making everyone go on alert. What stepped out was the last thing they expected. A masked, armored warrior.

The masked driver wore a black bodysuit with blue connecting lines all over it. Black armor with similar blue lines donned the driver's upper body, arms, and legs as a strange looking belt was strapped around its waist as some sort of bracer was also strapped around his left arm with a little toy car in it. The helmet was black as well as a blue line ran down the middle and met the 'R' logo on the forehead as it had a pair of blue optic lenses that were styled like stylish sunglasses. The thing that stood out was the tire around his upper torso with the tread grooves highlighted in yellow as the words 'Type: Next' were inscribed on the black surface. This here, people, was Kamen Rider Drive Type: Next aka Kamen Rider Dark Drive.

"Who are you!?" The blue haired girl asked, but I stayed silent as I looked at everything within my helmet.

"Transformation successful. Anti-Projectile field on. All systems green. Voice modifier on. Angel: Zafkiel sealed. You're good to go, Shin."

Once Belt-san had finished giving me my status, I slowly walked forward, analyzing the four and just like I had guessed, the scanners couldn't identify them. Guess I'll have to make do with whatever info I have.

"Identity of the four females: Unknown. Species: Unknown, but not human. Caution is advised."

They all looked at me weirdly, but I ignored the looks. I was used to that.

"Mission objective: subdue the white, blue, and green haired females." Knowing who I was talking about, the three girls raised their weapons. "Priority: Protect the Purple haired female. Failure will result in failing the mission." Now that I know what I must do, there's only one thing left to say. "Mission…Start." And with those words, I was off like a bullet.

(BGM: Surprise Drive by Mitsuru Matsuoka)

"What the!?" The white haired girl was surprised that I was already in front of her, leaving her open for a punch to the gut. She stumbled back and tried to regain her breath, but I didn't let her as I roundhouse kicked her face, making her stumble to the ground.

"Why you!" I heard the blue haired one charging at me and even though she her speed was far superior to that of a normal human, I've faced opponents that were faster, so I had no problem dodging her attack. I stepped back to avoid her axe before roundhouse kicking her in the stomach, making her skid back before I spun and gave her another kick to the gut, sending her flying.

"Die!" Sensors told me that the green haired one was attacking from behind so I quickly jumped and landed perfectly on her weapon. "What!?" I turned to her and kicked her face, bringing her down to the ground where I grabbed her and threw her to a tree…okay, seriously! Where is this music coming from!?

"Where is that music coming from?" I looked left and right, but couldn't find the source.

"I don't know why, but I like this song. It's fitting."

I scoffed. In my opinion, this song was more fitting for my dad than me.

It wasn't long until the three recovered and they all glared at me.

"Who do you think you are!? Coming here all of a sudden with a stupid theme song for yourself and interrupting our battle!?" The blue haired one asked.

Instead of asking, I simply turned the 'key' and pumped the Type: Next car three times. (A/N: I know it doesn't do that. Just deal with it.)

NE-NE-NEXT!

Before any of them could even blink, I was at them in a matter of seconds, punching and kicking them and sending them flying. I then sped towards the Purple haired girl's weapon and sped up to her.

(BGM End)

Oh good, the music stopped.

"Whoa!" She jumped in surprise when I appeared right in front of her and saw the other three being sent flying.

"You dropped this." I said, the voice modifier masking my voice as I handed back her weapon.

"Uh, thanks." She took the weapon hesitantly before getting up. "Who are you?"

"Drive." Was all I said before I sped away and appeared right in front of the white haired girl, surprising her again before I punched her to a nearby boulder. Feeling the effects of Next wearing off, I quickly wrapped things up and sent a barrage of punches at her, the last destroying the boulder and sending her flying back.

My sensors picked up the blue haired one attacking so I simply raised my hand and my Blade Gunner materialized in my hand before I spun and stopped her axe.

"What!?" She said in surprise, probably surprised that a weapon of my size stopped her huge weapon.

With some force, I pushed her back and slashed, sparks appearing instead of blood. From my right was the Green haired girl going in for a trust so I waited for the right moment before stepping aside, grabbing her weapon before I tossed my weapon into the air before catching it, now wielding it in a reverse grip as I punched her, the brass knuckle part of my weapon strengthening my punch as she was sent flying.

"You're dead!" I turned around and saw that the white haired on was looking pretty pissed off right now. I prepared to block her attack, but then, she was slashed by the purple haired girl.

"Don't forget about me!"

"Why you!" The white haired girl gritted her teeth before she charged at the girl. Their blades met and they traded blows. I will say this, they were skilled but the purple haired girl who I believe was called Neptune was clearly more powerful as she stopped an attack to her midsection, pushed her back before delivering a devastating slash to the chest, sending her back.

"Not bad." I said before I raised my weapon and fired a single shot, hitting that green haired girl that was attempting to attack her. "Watch your back."

"Right." Neptune said as she and I stood back to back as the three girls surrounded us.

"I'll deal with this one; can you take the other two?" I asked.

"Easy." She said, nothing but confidence in her voice when she said that.

Trusting her to take care of herself, we split up and I took one the White haired one.

"Bring it on!" She said before she charged at me.

Our blades met and we struggled for power before I used more strength and pushed her back. I swung, but she dodged just in time and swung her weapon, but I blocked it and pushed it aside before getting in close to attack, but using her speed, she dodged to the left and I felt her blade striking my side. I resisted the urge to grit my teeth before I quickly turned and blocked her sword in time before I started to push and when we were face to face, I pulled the trigger of my Blade Gunner, shooting her at point blank range, making her stumble back.

"Hey! No fair! Your weapon's a gun!" If it wasn't for my helmet, I would have showed her a blank stare.

"Your weapon's bigger and longer than mine. I say it's only fair." I said before I took aim and fired, forcing her to block my shots. I tossed my weapon and caught it again, wielding it in a reverse grip and dashed and punched her weapon, making her skid back as there was small dent on her weapon. It's more sturdier than I thought. She glared at me before she dashed to my left. I turned to see where she was going only to see her closer than I thought. Still wielding the Blade Gunner in a reverse grips, I stopped the blade of her weapon before pushing her back and slashed in an arc, but she managed to dodge in time, jumping up and went for an overhead slash which I easily stopped, but wasn't able to see her right kick, sending me back as I shook my head and turned to see her smirking.

"You can't see from your left side, can you?" This time, I gritted my teeth. She's found out about my blind spot. It's times like these where I hate this eye patch. No choice, but to finish this off.

"Shin! The girl!" Before I could reach for the key, Belt-san alerted me about Neptune and when I looked behind me, my eye widen when I saw her on her knees as the other two looked exhausted, but were still in a better condition than her.

"It wasn't easy, but we've finally got you." The blue haired girl said, wiping away some sweat as Neptune gritted her teeth, clenching a wound.

"Want to do the honors?" The green haired girl asked which the blue haired girl responded with a nod and lifted up her axe.

"No!" I went to run, but sensors alerted me about the white haired girl behind me and I turned around in time to stop her attack.

"I would be worrying about yourself if I were you!" I gritted my teeth in frustrations. I don't have time for this. Pushed her back and then kicking her away, I shifted the Blade Gunner to my other hand and turned the key before pressing the Igniter on the Shift Brace.

NEXT!

"Out of my way!" I grabbed my Blade Gunner just as cyan blue energy enveloped the blade, extending its reach as I gave a sideways slash, surprising her with my sudden new reach as she took the full force of my finisher.

With her out of the way, I turned to key and pumped Next just once.

NEXT!

With the effects of Next, I sped towards Neptune and made it in time to save her, crossing my arms to stop the axe attack.

"You alright?" I asked Neptune who just nodded.

"Why you! Quit interfering!" Clearly angry, she lifted up her ace and kicked my arms, sending them up and leaving me wide open. She then brought her axe down, energy surrounding it when Neptune suddenly appeared in front of me and took the attack for the both us, an explosion of light blinding my vision before she and I were sent flying off of the land and we're now free falling through the sky.

"Shit!" I cursed as I reached for Neptune, but she was too far away and was unconscious. "Krim!"

"Way ahead of you! KOI! TRIDORON!"

A few seconds later, the honking of my Rider Machine reached my ear and I looked behind me to see the NEXTridoron speeding towards me, holographic roads materializing under it. I held out my hand and as it zoomed past me, I quickly situated myself inside and drove towards Neptune, getting to her position in no time as the door opened and she fell into the seat next to me, the seat belt strapping her in as I drove towards the ground and in a few minutes, landed with a skid across the ground. I let out a sigh of relief only after we stopped skidding.

"That was rough." I said, the voice modifier off as I looked at Neptune. She had wounds all over her, but besides that, she was fine.

"You were able to keep her safe. Mission accomplished?"

"No. I've yet to subdue those three girls. I only managed to take down one before I had to step in and save Neptune. Until then, the mission will be put on standby for now."

Belt-san made a face as he sighed. "You and your missions. So, what now?"

"For now, we should see if there is a town or city of some kind nearby. She needs to her wounds checked up before they grow worse." I said until a bright light flashed next to me. "What the!?"

When I looked towards Neptune, I was met with a pre-teen version of herself wearing a big white hoodie-like dress with purple striped cuffs, lining, and a purple hood. The outfit had pale, ice blue and light lilac accents. As well as a zipper section, two big round pockets, a big zipper with an N on it, and strings resembling a plug. Around her neck she wore a simple white choker. Her lilac shoes have blue and white accents and were also worn with blue and white striped stockings.

"She changed form!" Belt-san said in surprise as I canceled the transformation.

"There must be a reason." I said as I opened the window and raised up Next. "For now, go find if there's any sign of life around here."

Next honked and I was about to throw him out the window when I saw a fair-skinned young girl whose most noticeable feature was her bust standing just a few feet away from me. Her hair is a light creamy pink color that is somewhat long and curls along the edges worn with a black headband with a C patched on the side as her eyes match her hair color. She wears a tan-white wool styled tank top with big neck and un-attached sleeves and matching styled boots, but with small ribbons/fuzzy balls at the top. She also wears a red plaid skirt, a black choker with a small heart on it, black-brown knee socks with light pink heart cut frills, and carries a black hip purse, and heart shaped buttons. Like her headband, both her purse and the heart on the choker has a C logo.

I blinked and she blinked and I blinked again.

After a few seconds have passed, I asked, "…Can I help you?"

And done! Now I bet you people are wondering, 'Who the fuck is Shin?' Well, spoiler alert, he's Drive Haru's future son. You should all know who his mother is if you read what I wrote. Now, I bet you're now wondering why did I write this. Well, it's to tell you this. With the soon to be Ex-Aid coming soon, I knew I had to make plans for a crossover with Hyperdimension Neptunia. Don't lie to me guys, some of you were thinking of crossing over these two series since their games.

But that's when I ran into a problem. See, I had planned to crossover Hyperdimension Neptunia with Dark Drive so I needed to do some reworking. After some planning, here's what I am doing. The first game will be with Dark Drive while the second one, Mk2 or Rebirth 2, will be with Ex-Aid. I published this just to tell you that. Sorry if I confused you all when I published this, but I hope you still liked it. Anyway, this has been Ashbel Longhart, signing out. See you next time.

P.S: Watch out for my Ryuki story. I plan on publishing that next when I feel the time is right.