Tsundere: (ツンデレ) , pronounced [tsɯndeɽe]) is a Japanese term for a character development process that describes a person who is initially cold and even hostile towards another person before gradually showing their warm side over time.
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Jack was was walking down the street with his friend Felix.

"So? How is you and Marzia going?" Jack asked Slyly.

"Oh... You know...."

"No, I don't."

"JACK! Great like always! She's everything I could want!"

Felix was thinking of something.

"Jack."

The green haired man looked at him.

"Yeah?"

"Well, I was wondering if you'd like to meet my friend, Mark?"

Jack nodded.

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Felix and Jack got to Marks house and knocked.

A few minutes later a man with blue hair, brown eyes and an emotionless stare, no smile... Nothing.

"Mark! How are you bro?" Smiled Felix.

"I'm fine, who's this?" Asked 'Mark' in a monotone voice.

"Hi I'm Jack!" He smiled.

"Mark." He held his hand out and the two males shook hands.

"Come in." Mark said.

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1 Year later-

Mark, Felix, Jack and Ryan (Cry) was walking down the street.

"CHOCOLATE CAKE!!!!" Screamed Jack.

Mark rolled his eyes.

"Do you really think you need to have more cake?" Asked Mark, no emotion, nothing.

They entered the cake store.

"Oh, look! Hot chocolate!" Said Felix.

Mark sighed in annoyance.

"And Cookies!" Said Ryan

"You're all babies!" Shouted Mark in Anger

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5 months later-

"Do you think Mark hates me?" Asked Jack

Felix looked at him.

"What?"

"I mean, he so cold towards me."

Felix laughed "Bro, he's like that with everyone, even his mother and brother."

"What about his dad?"

Felix stayed quiet "his dad... Died of cancer"

Jack looked shock "poor Mark."

"Yeah and he's never been the same again."

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1 year later-

"Hey Markimoo!" Shouted Jack, giggle

Jack rushed into Marks room.

"Hey Marky!"

Mark ignored him.

"Mark?"

He continued giving him the cold shoulder.

Jack just sighed

"Ok, never mind."

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3 months later-

Jack was at Marks house, cooking.

He was chopping a carrot.

Chop, chop, chop, "Ow!"

Jack had cut his finger with the knife.

"Son of a bitch!"

Mark came into the kitchen when he heard Jack shout in pain.

Mark sighed and walked over to the cabinet and got out a blue plaster.

He put the plaster on Jack.

"Mark?"

"I don't want you hurt ok?"

Jack nodded

Marks face was stunted pink and he walked away.

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Next Valentines Day-

When Jack first met Mark he fell in love with him, there was no denying.

So he went out and bough a blue rose.

-

Mark came from his bedroom, only to be met by Jack.

"Mark, I know you hate me and all but here..." Jack gave Mark the rose.

"T-Thank you J-Jack." Mark stuttered face scarlet red as he hugged the rose.

He ran upstairs leaving a happy Jack.

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Christmas-

Jack was staying at Marks for Christmas, so Mark got Jack something.

The last present for Jack, was Marks.

Mark gout out a his gift.

"Merry Christmas " he mumbled.

Jack open it and there was a laptop with a letter.

Dear Jack

                     Uh, Merry Christmas.... When you have me that rose on Valentines Day it was amazing and I loved it!

                    Is that your way of confessing to me? If it is....

                     Do you want to be my boyfriend?

                         Mark
                                  xxxxxx

Jack looked in shock.

"M-Mark?"

"Well?"

"Yes Mark!"

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5 Days later----

Felix and Ryan came round to see Jack.

They was talking.

Mark came out.

"Hey Mark~" whined Jack

"Yeah?"

"Cuddle me!!!"

Mark went and cuddled Jack... Smiling and blushing.

...

"Woah! You got him to smile!!!!"