Author's Note:

Hello guys, Dana here! It has been awhile since I've uploaded a new fan fiction here! I've had this Parasyte and Dragon Ball Super crossover idea floating around in my head for awhile now, but I never got around to writing it down. Like most of my fanfictions, it is going to have some tragedy and this one might have my OC's Komatsu and Hikaro Ruko. I have a basic idea in mind, but for the most part I'm just going with the flow. I hope you like it! Reviews are appreciated! Thanks for reading this far and I hope you enjoy. ~ Dana

There was a time of peace for our heroes, the Z-Fighters. Majin Buu was defeated, and everyone was going about their daily lives….until the Parasytes invaded. It was like any other night. Bulma invited Chi-Chi to go shopping for Goku's birthday tomorrow. They went to several shops at the Foothills, or rich side of town to buy clothes and other things for the hero of the universe.

"Oh come on, Chi-Chi! There's gotta be something Goku would like to wear that we can buy here!" Bulma was holding many shopping bags of gifts she bought for Goku and herself (but mostly for herself).

Chi-Chi crossed her arms and shook her head and exclaimed, "All these clothes are too high maintenance for Goku. He would not wear Gucci suits or anything like this. Aren't there any simple shirts for him to wear? I mean, I would love to see him wear all these expensive clothes, but he wouldn't even try it on if I were to buy it for him."

Bulma added, "Well, I'm the one buying it for him, you're just picking it out. How about some nice polos? Y'know what, I'm just gonna buy it for him and say it was from you." Bulma picked out some blue and red polos for Goku and Chi-Chi sighed and said tiredly, "I think I'm done for the night, Bulma. Or at least let me rest."

Bulma said with a smile, "There's some benches outside at the patio. I have a few more things I wanna buy, so I'll catch up to you later."

Chi-Chi found the patio outside where she could see the connecting stores entrances. She took a seat and stretched out her aching back muscles. She then sighed and took in the quiet and cooling night sky. It was a full moon, tonight, and she doesn't really go outside at night that much, so it was a treat to see the moon. Only she wasn't aware of the Parasyte that was coming towards her from the shadows.

"Ah, a female human." The parasyte with it's dying female host exclaimed. "This will be the perfect chance."

Chi-Chi was falling asleep when suddenly she heard Bulma's voice from inside the store. "I'm coming, Chi-Chi!" Chi-Chi slowly got up from the bench and saw Bulma coming outside from the store.

Bulma was smiling and waving at Chi-Chi. "Hey, you look awfully tired, so how about I take you home." Chi-Chi yawned and said, "Yeah, I'm exhausted from all the walking anyways."

Bulma had a look of terror on her face. "Ch-Chi-Chi!! Behind you!"

"Eh?" Chi-Chi was about to turn around, when suddenly the Parasyte sliced Chi-Chi's head off and took over her body. The Parasyte's head was now in the shape of Chi-Chi's.

"KYAAAAAAAH!!" Bulma dropped her bags, screaming and running for her life.

She ran and ran until she reached the parking lot and immediately got into her car and drove home at top speed. She was frazzled and terrified, to say the least. She used her car to call Vegeta, hoping he could help. Unfortunately for her, Vegeta did not pick up the phone.

"Dammit, Vegeta!!! The one time I really need you and you don't pick up!" Tears began flowing from her eyes and she finally reached home. She immediately ran to the gravity chamber where she found Vegeta leaving the gravity chamber from finishing up his late night training.

"VEGETA!" she then tightly held onto her Saiyan husband, who said annoyed, "What is it, woman!?" She could barely speak and said with a quivering voice, "I - I was shopping with Chi-Chi, when suddenly, a monster sliced her head off and took her over body!!!"

Vegeta was shocked and yelled, "What!?" Bulma held onto Vegeta tightly and the tears wouldn't stop flowing. "I'm serious! That's what happened! Oh, Vegeta! Chi-Chi is dead!" Vegeta asked, "Does Kakarot know?" Bulma shook her head and she let go of Vegeta. "Goku doesn't know. How am I supposed to tell him?"

Vegeta bit his lip and said, "I'll tell him. I'll be back." Vegeta flew off into the night to Goku's home. Bulma looked at Vegeta flying away and then ran inside crying.

Vegeta's mind was racing. How was he supposed to explain to Goku about what happened to Chi-Chi? Now that Vegeta thought about it, he did feel as if though something was off. He sensed very faint energy sources all over the city, but he didn't pay much attention to them because he thought they were just humans. What exactly did the monster that Bulma saw look like? All these questions but no answers. All he knew was that he was the one to tell Kakarot about what happened. He had to.

Vegeta arrived at Son Goku's home, who he could sense was asleep. Vegeta didn't even go through the front door, he just went through the window of Goku's bedroom. He found the Saiyan fast asleep all cozy in his blankets. Vegeta swallowed and decided to just slap the Saiyan awake since he didn't know how else to do it. He approached Goku and looked down at him.

Then Vegeta thought for a moment about something. In his younger years when he was evil, he probably would have took an opportunity like this to kill the younger Saiyan. He shook his head and mumbled, "Stay focused." Vegeta raised his hand and brought it down to slap Goku, when suddenly Goku opened his eyes and grabbed Vegeta by the wrist.

"What the!? Kakarot, you were awake!?" Goku grinned and said happily, "Oh hey, Vegeta! I can see you were trying to sneak up on me! Did you plan on sparring with me here?" Vegeta growled and snatched his wrist away. "No, you idiot! I came to tell you something. Something very important."

Goku sat up and yawned. His already disheveled hair was even more wild. "What exactly did ya need to tell me? And this late at night too?" Goku looked around and questioned, "Huh?" Where's Chi-Chi? I know that she went out with Bulma, but she should have been home by now."

Vegeta swallowed and said in a low voice, "That's what I came to tell you, about your wife." Goku looked at Vegeta with a curious face. "What? Tell me about Chi-Chi?"

Vegeta sighed and leaned against the wall with a lowered head and crossed arms. He said darkly, "Your wife is dead." Goku immediately jumped out of bed and said shocked, "What!?"

Vegeta continued, "While Bulma and your wife were out shopping for your birthday, a monster sliced Chi-Chi's head off and took over her body. Bulma saw the whole thing happen. She managed to run away and come home safe, where she then told me what happened."

Goku seemed to be in shock still. With his head lowered he could only manage to whisper, "I don't believe it...Chi-Chi is dead? No…" Goku gritted his teeth and had fists by his sides. Goku then looked at Vegeta and said, "I have to find the monster that did this and kill it! I'll kill it with my own two hands!"

Vegeta, head still lowered, spoke up and said, "I don't know what the monster looks like, Bulma couldn't tell me." "What do you mean she couldn't tell you!? I need to know what it looks like so I can destroy it!!"

Ki sparks began flickering around Goku, raising his fists to elbow level. Vegeta barked at Goku, "Kakarot, you need to calm down! Bulma was so in shock that she could barely speak. It's not like she didn't want to tell me. Now, I'm willing to help you find this monster and kill it. After all, it could have killed Bulma. It is a threat that needs to be dealt with."

Goku began pacing back and forth, running his fingers through his hair. "Could it have been one of Frieza's race? No, Bulma knows what Frieza's race looks like. And she said monster, but that could mean anything. Dammit, dammit, DAMMIT!" Goku's negative energy was released through a shockwave that shook the whole house and it's outside surroundings. Vegeta was flown back from the shockwave and slid against the floor.

"Shinichi, I felt a strong energy approximately 10 miles from here." Shinichi was laying in bed and then sat up, "What? Migi, how strong?"

Migi said plainly, "I'd say about 20 times stronger than us. It doesn't feel like one of my kind, but it definitely isn't human energy. I think it might be another type of life form that we haven't come across yet." Shinichi gasped and said shocked, "20 times stronger than us!? There's no way we're going to face it!"

Migi said in a monotone voice, "Shinichi, I am curious to see what life form this is. It definitely is a life form not from this planet. I wonder if it knows about my race. So, shall we go seek it out?"

Shinichi blurted, "I said no! I'm not going to-" Migi then turned one of Shinichi's right fingers into a blade and lightly grazed it across Shinichi's neck. Shinichi whimpered in pain and looked at Migi with fear in his eyes.

Migi exclaimed, "I must know if this life form knows about my race, and you're going with me, whether you want to or not. Understood?"

Shinichi gulped and said with a slight shake in his voice, "U-understood."

Author's Note:

Well, I hope you enjoyed chapter one! It was quite fun doing some writing again, (especially doing writing that isn't a school paper). I don't know when I'll be able to work on the next chapter because I have exams coming up this week. Let me know your thoughts in the comments section below! All comments and reviews are appreciated very much. Thanks for reading and hope to see you in the next chapter! ~ Dana