Disclaimer: I do not own Ben 10 nor Diabolik lovers.

Ben in here is from Omniverse. Also, his character is a little changed; he is serious, careful, but a little playful.

1

Arrive

A boy with short brown hair, green eyes, and wearing a black school jacket over a white dress shirt with black pants, holding a school bag with his right hand, stood in front of a school which opened at night. The boy sighed deeply, as if he was nervous or satisfied. Then, he raised his left wrist before pulling down the sleeve, and revealed to stare his watch. It was white with few green stripes on its side, and had a black square plate with green stripes forming a shape of an hourglass, instead of numbers or clock hand. It wasn't a watch, but a device called the Omnitrix.

The boy's name was Ben Tennyson, the most famous super hero in the world, or probably in a universe. He was, by using the special power of the Omnitrix, transforming into various aliens which had unimaginable powers. But even he had the biggest attention or popularity, it didn't work in here with no reason, which made him disappointed. However, in the same way, he was a bit satisfied.

Since he became really famous, various problems happened around him. Not only just a lot of people became to know about him, but also vilians who didn't know about the aliens who beat them. People noticed him wherever he went or whenever he arrived, while the vilians started to aim at his important people, such as his family, friends, and even citizens. Plus, he had been suffered by some crazy paparazzi or slanderous Will Harangue, who always reported him that he was a terrible vilian for humans. Because of that, he even thought that he want to get away form all this celebrity and find a place that he could enjoy more human-like life.

And it happened a week ago.

Ben recalled the day that happened.

Flashback

It was a normal day like before. Ben was heading to his grandfather, Max Tennyson, with his partner, Rook, after having a problem with Animo, who managed to be sent to a prison. But he also had some crazy paparazzi on the way, trying to take his photo or having a sign. And when his grandfather saw him arrived, he noticed his tired, uncomfortable face.

"Ben," he called and his grandson looked at him with tired eyes. It made Max hurt. "What's wrong, son?"

"Nothing," he lied, trying not to worry his grandfather. But he didn't lie completely, because it would also made his grandfather upset. So, he added with an awkward smile, not wanting to worry him. "Just being tracked by someone."

"By who?" Max didn't remove his worry. He had seen a lots of vilians tracked him, planning and trying to kill him, before taking his Omnitrix in order to make their own. He was now feeling anxiousness inside himself, wondering if his grandson had the same thing.

"You know, paparazzi," said Ben, earning a relief from his grandfather, but not erasing his worry.

His partner looked at Ben with a worry, too. Being together with him a lot, he had seen a lot of suffering that Ben had, which was very hard to understand the way the people did to him. He was mad at first, but when he saw the face of Ben, only worry remained inside. Rook thought that even if he were Ben, he would feel like the way Ben would. He turned his head to Max. "I have seen many people following our tracks, but it was worse than before. As a result, I do not think that Ben had a fine day."

Hearing this from Rook, Max looked at Ben. His grandson couldn't help but sighed tiredly. Max was a bit glad when his grandson became so famous, but when he saw his face, he thought that the things around him was too hard to care. He wanted to help him, but he didn't know how. He was too famous to go anywhere to find a place that Ben could stay relax and comfortable. But there was a second problem. Even if Ben could managed to escape from all of the suffering, he knew that there is nowhere on Earth that place could exist.

Or, at least, he thought, until now.

There was a call coming out from one of the computer of the Plumber base, and Max turned to see who was calling. A screen of the caller appeared. It was a woman with black hair tying with a bond, and glasses. It seemed that she was a teacher.

"Hello, Magister Tennyson," she smiled before she looked at Ben. He didn't look at her, only eying at the floor with tired eyes. Seeing this, the caller's smile disappeared and rolled her eyes to Max. "Is there something wrong?"

"Oh, it's not that serious, Miss Mei," he said before he looked at Ben. He didn't move a little. Rook did the best he could do for him right now; comforting him. Max sighed, and turned to Miss Mei. "You see, my grandson had a problem with...well, his fans."

Miss Mei blinked and noticed what Max was saying by hearing the highlighted word, fans, and said, "oh." She looked at Ben worriedly, thinking how he had spent his day until now. She felt happy when someone gain popularity, but hearing that someone was suffering by fans was enough to make her sad. She talked to Ben, saying the word he could feel better. "Well, I don't know much about you, but I'm sure you had a really hard time."

Ben couldn't agree more. He nodded as a 'yes', still not seeing her.

Her face turned into sadness, seeing the boy's reaction. He looked so poor and made her want to help him. She raised his finger as she started to think of something, until she came up with an idea and smiled. "Ah!"

Max looked at her. "Miss Mei?"

"Well, Ben, if you want some freedom or so," Miss Mei's words made Ben raised his head, curious on his face. "I would like to recommend you to come here, in Japan."

That was enough to make all of them surprised, even Ben. Only Miss Mei was smiling.

Rook spoke to her, having confuse. "But Miss Mei, Ben's name is well known all over the world. Everyone will notice him, even on the other side of the globe."

"It might be," Miss Mei said with a smile. "But I don't think it will work in here."

Hearing this, now everyone was confused.

"What do you mean?" Max asked to her.

"Well, Magister Tennyson," she began to explain, still not removing her smile. "I'm settling at the town in Japan, since it is my home, and nobody didn't know that much about there."

Max nodded. "But what does that supposed to do?"

"You see," Miss Mei continued. "The town here is a kind of closed society. As a result, they don't know much about the outside world. I spent there a lot and saw your grandson on TV, but strangely, I realized that the townspeople didn't have much interest about him, only inside the town. And because of that, the most famous and well-known person for them, is an idol called Kou Mukami."

'Kou Mukami?' Ben repeated his name in thought before he asked to the teacher. "And what is important of that?"

"I mean," she paused for a moment to clear her voice. "Since there is the famous idol in the town, and the town had a close society, I don't think you could be bothered by paparazzi. Most of them don't know that there is an alien transformer in USA, maybe all of them, I guess. Also, there is a night school."

"Night school?" Ben asked her to make sure he heard right and fortunately, he did.

"Yes," she nodded. "It's a special school for students who can't or don't study at daytime. Only a few goes there, so it would be okay for you. The girls only interested in Kou, and boys...well, I'm not sure, but I think they don't have any interest in other things."

Ben blinked in disbelief. He couldn't believe a night school exists. Plus, the students there didn't have any interest to him, only an idol for girls. He thought that the place might be the best to spend his life without the attention he had, but also he worried. 'Is it okay to go there? Will there be safe for me? Am I not going to worry any trouble anymore?'

"So, you're saying he can go to night school where have only a few students, in the town where the people have no interest in the outside world?" Max said and Miss Mei nodded. The old Plumber was lost in thought, considering to send his grandson to Japan. Soon, he asked the things he came up. "What about the place he will stay? And what about the money?"

Ben flinched at this, but Miss Mei was fast enough to say. "I have a home with a room. He can stay there and I can offer him what he will need. I can cook though, and it doesn't matter to have a boy to stay for a while, does it?"

Ben smiled widely, happy to hear the words from the kind person. He really wanted to go to a place he could rest, but he didn't have time because he had a lot of work to save the world or so. But then, a chance came. A chance to have a normal day like others. Ben couldn't help but getting excited of this new home he would live. Getting too excited, he accidentally said. "I want to go!"

Max was surprised at his childish shout, but he smiled when he saw Ben's face. He also wanted Ben to have a rest from the things he had, so he couldn't help but allow his grandson to go Japan. "Well, if Ben agreed, then I couldn't disagree with him."

"Yes!" Ben shouted because he can finally go to where he could stay quietly.

"Subarashi!" Miss Mei was surprised at shout and covered her mouth as everyone frozed. She blushed. "Oh, I'm sorry. I can't help myself saying Japanese when I'm excited."

Everyone laughed at her saying, even Miss Mei.

End of the flashback

And that was all.

With a little help from Miss Mei, Ben had studied Japanese for a past week, even while fighting the vilians. The Plumbers were shocked at Ben who was quite and only concentrated in studying Japanese, and some of them shouted at themselves that they were dreaming or dead. Even his grandfather, Max was shocked at first, but soon he get used to him. One of the rumors stated that Max was crying in the restroom, feeling proud of his grandson. And Rook couldn't get along with Ben like before, but he enjoyed learning Japanese with Ben.

There were some funny stories during his study.

One day, Ben called her cousin, Gwen, to ask her how to say 'I came from USA' in Japanese, which made her choke with her sandwich. After a few cough, she asked him as he was insane. "What did you say?"

"I said, 'how do I have to say I came from USA, in Japanese'. Miss Mei is busy to answer my question, so I'm asking you. Tell me." Ben said over the phone, making her cousin faint in disbelief. Ben just say 'hello' or calling Gwen over the dropped phone.

Also, Kevin was angry at Ben because he didn't come to help him to investigate the Forever Knights, until he saw Ben muttering Japanese while reading a book for beginners of Japan studying. He didn't notice that time was running and when he saw Kevin with a open mouth, he was surprised that he forgot the promise and apologized immediately. But Kevin didn't do anything, only forgiving him.

Ben didn't stop studying during the fight with vilians. Vilgax attacked Ben, but in a few minute, he was shocked at himself captured by his enemy while reading a book. Dr. Animo's eyes were almost popped out as Ben said with a Japanese for mistake before sending to a jail. Some of the Forever Knights reacted as if they saw a ghost, causing Ben angry because they ruined the record of questions about Japanese, and knocked them out in less than a minute. Other enemies were angry as they thought they were ignored, but soon they fainted as they saw Ben saying letter, reading a book, writing on paper, or using his cell phone to hear a lesson, which is all about Japan.

While others dropped their mouth in disbelief, Ben managed to learn completely how to write and read, but not the way to say and to hear, only a bit. A week was short to learn all of them, even he knew some Japanese since he liked Sumo Slammers, a game with some Japanese jokes. He even learned Karate a little, in order to protect himself.

And by the time at the airport to go to Japan with Miss Mei, the family of his, and friends came to greet him, saying 'good bye' and hoping he would have a great time. Ben couldn't stop waving his hand to his family and friends until the plane took off and unable to see them. He felt sadness inside himself because he would not see them for a while but soon it disappeared when he heard from Miss Mei, that he could contact to them.

'So this is the night school...' Ben thought as he saw the building where he had to go during the weekdays, while he was in Japan.

It was yesterday that he arrived in Japan and Miss Mei made a report for him, that was belonged to night school. After that, when he was heard that he was accepted to go, they went to a store with uniforms. And he had received school books from the teacher. All was prepared.

'The school is a little weird,' Ben reminded Miss Mei saying some informations for him. 'Some classes don't be progressed like the other ones do. For example, one day in the first grade, in the 6th period, the teachers just said study until the school ends, and they left. But the students didn't do, instead, they chatted or returned to their home. You are the first grade, so don't think it's weird when you face whatever you saw.'

"It'll be fine, Ben," he murmured, calming himself. "You've seen worst before. What could it be?"

Then he remembered Miss Mei's warning. A warning for him. 'Oh, and I almost forgot. Don't bother the family of Sakamaki or Mukami. I have a weird feeling about them, and I don't know what they are. Make sure to be careful, and if you want to, you can investigate. Just talk to me. However, some of them are real troublemakers and a little psycos, so don't get along with them.'

'It won't be that worse, will it?' After comforting himself, he stepped inside, wondering about his new school.

The school was quite big, possible to be easy to get lost. Ben looked around, seeing only few students remained in a hall. He kept walking, then he felt odd. He couldn't find a map of the school. Since he came here, the first thing he needed to do, was finding a teacher, Miss Mei, and to do it, he needed to find a teacher's room. And he couldn't find a map to find it. He looked left and right, but only saw school hallways that led to classes, or walls with paintings.

He sighed. "Guess I have to ask somebody, or find out by myself." Being suffered by paparazzi, he was a little afraid when someone would notice him, shouting to him as he/she saw Ben Tennyson, the famous super hero. But if he don't ask, it would take a long time to find the teacher, Miss Mei.

While thinking, he started to walk up the stairs, hoping Miss Mei would be found. But then, when he looked up at the stairs, he saw a blonde girl, walking up unsteadily. He looked at her, feeling a sweat running down his cheek. 'I have a bad feeling about thi-'

And just as he thought, she slipped and started to fall. But in a quick move, he managed to grab her, stopping her from rolling down the stairs, which was really terrible for a girl. "Are you alright?"

The girl opened her eyes, revealing her pink orbs and looking at the boy who had just saved her. She blinked as if she didn't understand. "Eh...? What...?"

Ben raised his eyebrow, wondering why she was acting like this, but soon he noticed that he spoke in English, not Japanese. He coughed for embarrassment, and asked her again but this time, in Japanese. "Are you alright?"

"Eh? Ah, ah, yes," the girl replied quickly and tried to stand by herself, but instead, she fell again, which made Ben grabbed her again. The girl looked like having a headache. She opened her ayes tiredly and looked at Ben. "Uh... Thank you..."

Ben didn't know what to do. He came here a while ago, and before he could find a teacher's room, a girl was about to faint on the stairs. He didn't want to leave the girl alone here, even though he could. He looked down at the girl, who seemed so dizzy. 'Even though I should find Miss Mei, I can't leave her alone.' He made up his mind and smiled at her warmly. "Where is a school nurse?"

Ben took the girl to the school nurce by holding her to stand properly. While he did, he asked her why she fell. He wanted to ask her about her walking, but it was too difficult for him to speak in Japanese, so he choose the easy question he should ask. He was told that she had an anemia often but that didn't earned a relief from him, only a bigger worry.

"Having an anemia often is not good," he explained to her, who made a sad expression. "Why did you came to school? You should rest for yourself."

"I... I'm sorry," she said.

Ben made a sigh, before he reached a room which had a sign of School Nurse. "We have reached."

The girl looked at the room before turning her head to Ben. "Thank you for the help. Um..."

Ben realized what she was going to say, so he introduced himself. "You are welcome. My name is Ben Tennyson."

She blinked at his name until she noticed something. "Are you...a foreigner?"

Ben didn't understand, since he didn't know a word foreigner in Japanese. He didn't know how to respond, avoiding her eyes and scratching his back of his head.

The girl realized the reason he was acting, so she tried to make a sentence in English. "Are you...from...other...country?"

Hearing this, Ben finally understood and replied. "Um... Yes. I came here yesterday."

She smiled, relieving that the boy had understood. "I see. I'm Komori Yui."

"Komori... Yui?" Ben replied her name, which made her nod. Ben remembered that Japanese names were arranged in an opposite way; last name in front, names in behind. This made Ben confuse, so he practiced rearranging names in English way while he stuided Japanese in USA. 'If I rearrange, it will be Yui Komori... Then her name is Yui.' He smiled and said, but accidentally in English. "Nice to meet you, Yui. Oops."

They frozed, blinking with each other. Ben's cheek became pink a little as he covered his mouth. But soon, they giggled before they burst into laugh.

"I could teach you Japanese, if you're okay," Yui managed to stop her laugh before saying a suggestion to him.

He was surprised at her, but soon he smiled and agreed with a nod. "Thank you."

But their moment was interrupted by a loud, rough voice. "Hey, Sow!" They flinched and saw a very tall student who had a messy brown hair, tied up in a bun with bangs and some strands hanging out from the back. He wore a school jacket like Ben's, over a black sweater and a slightly unbuttoned white dress shirt, with black pants and brown shoes. His blue tie was loosened along the collar of his shirt with a white bow tie on its left. On his neck, was a necklace. He had a bracelet on his left wrist.

'Who is that?' When Ben thought that, before he could move, he was caught by the collar of his jacket, and was pushed against the wall. "Ugh!"

Yui gasped for seeing this. "Yu, Yuma-kun! Stop! He didn't do anything!"

"Of course he did!" 'Yuma' yelled at her, holding the jacket tight, which made the alien boy choke. "What were you saying, hah?! Were you trying to steal her away or something?! Say it, you brat!"

Ben couldn't replie, rather than understand their saying. He grabbed Yuma's hand to release his grip, but he was too strong for him. His eyesight began to blur. He couldn't think fast. 'What's the matter with him?! I didn't do anything, just talked to her!'

"Yuma-kun, no!" Yui told him to stop, pulling his jacket, but no use. "Ben-kun is new here! Don't be so harsh to him!"

Unfortunately, his anger grew bigger when he heard the unpleasant word from her. "Huh? Say again, Sow. What? Ben-kun?! Now you're talking, you became closer to him to plan or something?!"

"No, I wasn't! Just let him go!" Yui begged and pulled his jacket harder. But Yuma just hold Ben harder. The girl looked at this and she began to panic. She even hit him, trying to release her new friend.

Ben's eyes shot open, and he kicked his chin hard with his right knee, causing him to fall and loose his grip, and Ben choked to find air. He shot a glare to Yuma, who rubbed his chin with his right hand, also glaring at him. He tried to stand up, but lost his balance. He brought his hand to the wall, trying not to fall. 'Good thing I learned Karate from Miss Mei.'

Sure he did, while he was studying Japanese hard. During the study, he realized that even he managed to have a rest from his hero life, it was no use when he revealed his powerful device. So he decided to keep it as a secret, but another problem came up in his mind. 'What do I have to do when I need to use the Omnitrix?' Ben told his grandfather about this, and he was told that it was good thinking to keep it secret, and since he used his power so often when there was a fight, he was told to learn Karate to protect himself, which made Ben solve his concern. After that, he learned Karate that he could use as a protection, from Miss Mei, while practicing how to read a letter.

"Why you...!" Ben didn't notice Yuma was approaching to him, and he saw he was in a distance less than an inch. Yuma raised his wrist to punch him, but Ben managed to roll away and reached his hand to his left wrist.

However, he stopped. Not because he was afraid of him, but because of the reason he shouldn't use the power, in his very first day of school. He didn't want to ruin this chance to live normal, and as he thought, he removed his hand and began to run. He heard Yuma shouting behind him, but he kept running, until he ran up the stair to find a place to hide and found a best room.

A teacher's room.

I know they are some weird things inside this story, so let me explain.

In here, Yui introduced herself, 'Komori Yui'. Actually, Yui Komori is correct when saying her name in English. But, the story here, is a view from Japan, so I'm going to write all of the DL characters' names in Japan style, even I will write in English...

Any question for me? Then review!