I try writing in a different way with more dialogue instead of descriptive words... Hopefully it's still nice to read on for some of you.
Nothing belongs to me beside the plot.
In the academy office
Knock knock.
Turning the knob, a head with brown beard peers in from the gap of the slightly ajar academy office door.
"Iruka Sensei, are you busy? May I have a word with you?"
"Sure, Asuma San, how can I help you?"
"It will be better if we could find some place else to talk."
"Oh, right, how about the roof?"
"Yup, that will do just fine. Shall we?"
"Erm... Sure." Iruka turns to his fellow sensei and excuses himself from stepping away from his desk.
At the roof
"I believe you know why I ask you out, Iruka Sensei. Is it true then?"
"Yes. It's true."
"You volunteered. Why?"
"I did what is needed. As a Shinobi of konohagakure, it is my duty to put the well-being of the village first before anything else."
"What about Kakashi? Have you told him about it?"
"... No, it will be better if he does not know. Tsunade Sama says she had given the order to those who are involved not to leak a word to Kakashi."
"Kakashi is not going to like this."
"He didn't have to like it, it's a direct request from the Fire Lord. Even Tsunade Sama cannot reject it."
"When are you leaving?"
"I have to wait for Kakashi to come back from his mission. Tsunade Sama wants me to finish my unfinished business before leaving."
"You have set your mind then?"
"Yes, I am."
"I have always thought it will be him leaving you, not the other way round."
"Life is full of surprises. It was the same when Kakashi agree to try out this relation. I never thought he will agree."
"You changed him, Iruka Sensei."
"Really? In what way? He's still the same; late as always, reading the horrible orange book in public, not romantic, always talking to his plants and not to mention his cleanliness habit... But, I still love him."
"He cares about you. He wants you to be happy."
"I want him to be happy too. That's why, I have to do that."
"He loves you."
"Not as much as I love him. I can still do it before he falls in too deep."
"He will never agree to it."
"I'll make him."
"It is not going to be easy for you or him..."
"I know... It never will when Kakashi is involves."
Three days later at the main gate of the village
"Kakashi San, thank you for your hard work and welcome back."
Without looking up from his orange book, he waved casually at the two chūnin performing guard duty.
"Kakashi San, wait! I have a message for you."
"Hmm?"
"The Hokage wants you in her office as soon as you get back, as in immediately."
Poof!
In Tsunade's office
"You're looking for me?"
"Brat, you are suppose to show me some respect by knocking on the damn door and not appearing whenever you wants, sitting at the side of my desk. Get your butt off before you regret being born."
Kakashi moves away from the desk and sits himself at the edge of the window with one leg on the window sill and the other hanging from it, his orange book never leaving from the vision of his eye.
"Good job on the mission. I have another assignment for you. It is a B-rank mission and I need you to leave in two days time."
"B-rank?"
"It's an escorting mission. The client specifically asked for our best Shinobi and is willing to pay a hefty sum for it. There's no reason for us not to accept."
"It needs not have to be me then. Send someone else to go, I just come back from one and I am not interested in it. Since it is a B-rank, I believe we have plenty of Chūnin or Jōnin alike to take on such an easy mission."
"You are going whether you like it or not. That's an order. Now scram!"
Poof!
"Brat."
At the entrance of the Academy
"Ja mata ne, Iruka Sensie."
"Mata ashita, remember to finish up the essay and hand in tomorrow at the beginning of the lesson. Don't forget what you have learn today and don't loiter around. Go back home straight."
"Hai Sensei", the children shouted back in unison.
"Finally those noisy little brats are gone and you are free from their idiotic nonsense."
"They are not idiotic, Kakashi. I prefer to call it naive."
"I believe I don't act the same way as them when I was their age, they are idiotic and stupid."
"Not everyone is a genius like you."
"They didn't have to be a genius to put on a better learning attitude."
"They are kids, they are suppose to enjoy their childhood while they still can."
"Whatever you say, Iruka, whatever you say."
"By the way, welcome back Kakashi."
"I'm back," he smiled. "but I am going to another mission in two days time. An order from Tsunade though I am not keen to go. It is a B-rank escorting mission."
They start to walk in the direction of Iruka's quarter.
"Oh, since it is an order, there is no helping it. Just take it an opportunity to relax a little? You have been on too many A and S-rank missions. It will be good to have a break from it. To keep your sanity, and perhaps to cool yourself down."
"Cool myself down from?"
"Nothing, it's just a saying."
Looking at Iruka, "Is there something going on which I need to know when I was away?"
"No."
"Are you hiding something from me?"
"No."
"Did something happen?"
"No."
"Then tell me what is bothering you."
"No."
Kakashi stops walking.
Realising what he just said to Kakashi, "I mean no, there is nothing bothering me."
"Liar."
"Am not."
"There is something bothering you."
"There isn't."
"Tell me."
"What do you want me to tell you? There is nothing to say."
"Something happened. What is it?"
"How many times do I have to repeat myself. Nothing happens."
"Spill."
"N.O.T.H.I.N.G."
"Do I have to find out myself?"
"..."
"Tell me what's wrong Ruka."
"..."
"Ru?"
"Don't call me that."
"What?"
"Don't ever call me that anymore."
"What's wrong? Talk to me."
"Fine! I have enough of you and I can't take it anymore. Let's break up."
"Is that your new prank?"
"No."
"A joke?"
"No."
"Did you and some others have a bet on what my reaction will be?"
"No! There is no hidden agenda at all, I am saying for real, let's break up."
"You are serious."
"I am."
"Why?"
"I don't love you anymore."
Kakashi looks hard into Iruka's eyes.
"What did you just say?"
"I don't love you anymore, that is why."
"This is not true."
"When you are away from mission, I have realise I don't miss you as much as I am suppose to and there is no difference whether you are around or not."
"I don't believe it."
"I don't feel guilty even when I sleep with another."
"You what?"
"I slept with others and I don't feel guilty about it, that's the truth."
"You won't."
"I did."
"Tell me their names!"
"I am not that stupid, knowing what you will do to them."
"You are lying then. No one will dare to lay a finger on you knowing who you belong to."
"I may not be a genius like you but I am good at certain thing. Henge no jutsu, it is not difficult to become someone else."
"You did not."
"Believe it or not, I did and that's that. I'm leaving you."
"Nobody leave me until I initiate it!"
"Oh? The thousand jutsu user, Great Almighty Sharingan no Kakashi, you are such an arrogant man, full of yourself. Did you think I will never leave you? Come on, we had our share of fun, don't make this difficult. It will be better if you just accept it and we can move on in separate way. If you are worry about your reputation, I will say it is you who initiate it. Hell, I will even put on a heart-broken face to show everyone how hurt I am."
"That did not just come out from your mouth. You are not like that."
"Apparently, you do not know me well enough. I feel so much better knowing I do not need to put up with you anymore. I will go back myself and there is no reason for you to follow. Sayonara."
Iruka turns and leaves. Not once did he turn back to look at his lover, whom he knows he has hurt badly.
For konohagakure.
Did some of you enjoy the story? Should I continue writing a good ending or a sad ending, let me know and tells me what you think.