Probably some spoilers in here. Probably won't affect those who read the manga because I forgot how far the anime is. Also the one shots will be gender neutral from now on unless I specifically say what the gender is.

You always knew Dazai Osamu was a, strange, man. He always talked of having a double suicide with the woman of his dreams someday. It annoyed you to no end, his countless attempts at it, his usual flirty personality with a beautiful woman in his proximity, and the worst of all your own infatuation to this man. You first met this man actually when he was attempting to jump off a roof. It was quite a coincidence that he was a part of the Agency, and you were beginning your job there.

You didn't understand why you were crushing so bad on this silly detective. Crushing isn't the right word, the more you see him, the more your heart would throb and the more you would turn into a stuttering mess. You were growing in love with the detective.

"Ah, (Y/n)-san how're you?" You heard Dazai's voice ask. You saw him, and the new recruit Nakajima Atsushi by his side.

"Hello Dazai-san, Nakajima-san." You said bowing.

"Did you just come back from a case?" You asked.

"Yeah, and also I had to stop him from drowning again." Atsushi said annoyed. You gave Dazai-san a deadpan look to which he just waved you off.

"Come now you two, enough of those looks." He said.

"Again Dazai-san? That's the third time this week." You said. He played it off just giving his goofy smile as you glared at him. You tightened your grip on the reports you held as he continued giving off this playful tone as he talked of his "beautiful" double suicide.

"Dazai-san, can I speak to you?" You asked. You looked at Atsushi and he nodded at you, a sign that this was a private chat. He took his leave, and you stood in front of the 22-year old detective.

"Eh? What's wrong (Y/n)-san?" He asked blinking. The he gasped loudly, "You're not going to yell at me like yesterday are you? I already got a lecture from Kunikida earlier." He said almost whining.

"Dazai-san, I'm not going to yell at you." You said, and breathed out a sigh of relief.

"Oh that's good-"

"But, all I want is to understand. Why are you so addicted to this suicide idea?" You asked.

"Why? Well the answer is simple...I like suicide, or more like I like double suicide." He said.

"With a beautiful girl?" You asked blankly. For some reason this reason always made you feel angry.

He snapped his fingers at you, "Exactly." He said and you sighed in frustration.

"I still don't understand." You said.

"What's there to understand?" He asked tilting his head.

"You!" You yelled at him. He stepped back a bit confused.
"I don't get why you're so addicted to this idea. Why you'd rather just take to moment to die instead of taking the moment to live! I want to understand everything about you, was there something in your past that influenced you?!" You asked frustratingly. His eyes darkened at the mention of his past. You were the last person he wanted to get involved with the monsters of his past. You were still new to the Agency after all, and you didn't even have any supernatural powers. He didn't know why, but he wanted to prevent any harm that could come to you just because he was an ex-Mafia member.

"(Y/n)-san," He said seriously. He put his hand on top of your head, tilting your head so you looked him in the eyes. Your cheeks turned pink at the intensity he was staring at you with.

"It's best to not understand. My past is best left in the shadows, because you might end getting hurt by it. And that's the last thing I want." He said with a deep almost warning tone.
You blushed at his declaration, and that he sounded concerned over. Almost as if he wanted to protect you from it. You closed your eyes and let out one last sigh.
You shoved the papers to him, "These are reports you're required to read." You said simply. You turned away with a blush still apparent on your face.

"I-I'll see you later." You stuttered and finally walked away.
Dazai rubbed the back of his head staring at you as you left.
"Man, did I upset him/her?" He asked. Finally he looked at the reports with a disgusted look, he was upset himself because he had even more work to do.
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You walked to work the next morning, all of your thoughts occupied with what Dazai said yesterday.
'Is he shutting me out?' You thought. You reached for the door, and you finally decided to leave it be. Once you entered everyone was hard at work as usual. You smiled at how welcoming it always felt.

"Oi (L/n)-kun (kun could be used for a boy or girl.) You heard you name being called. You saw Kunikida walking to you.

"You mind taking care of that idiot today?" He asked. He pointed back to a lazy looking Dazai who was dancing around with his headphones in his ears. You sweat dropped at his actions, and turned to Kunikida.

"Any reason Kunikida-san?" You asked.

"Because he sent Atsushi out to investigate this one case in the city, and he's just being really inactive. Also who knows when he'll attempt to jump off of something again." He said with a few veins popping on his forehead. You nervously chuckled at Kunikida's expression, but you nodded.

"Ok, I'll take care of him." You said.

"Thank you." He said gratefully before walking to discuss something with Ranpo.

You walked up to the strange detective, while he was having his little session, and you tapped his shoulder.
"Hm? Oh (Y/n)-san!" He exclaimed giving a child-like smile.

"It's good that you're here. I've been meaning to ask something." He said while patting your head. Your face started to heat up at his action, but you kept your composure.

"What would that be?" You asked. He then got down on one knee, and you looked at him with wide eyes.
"(Y/n)-san, I've been meaning to ask," He said intently. He took your hand in his as your red blush finally became evident on your face.

"Would you...commit a double suicide with me?" He asked. You blinked a couple of times wondering if you heard him right. Then you did a double take as you hit his head.

"Dazai-san! That's not something to joke about!" You yelled at him.

"Ow! But I wasn't joking (Y/n)-san!" He exclaimed while rubbing the sore spot on his head.

You sighed rubbing your temples frustratingly. Then you came up with an idea.
"Dazai-san, since you're not working. Want to go outside to the city with me?" You asked. He looked at you quizzically while raising a brow.

"Just to get some air or something. Come on!" You exclaimed with a smile. His eyes widened slightly and a tiny shade of pink covered his cheeks as your smile gave off this very radiant expression.
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You and Dazai went outside, and simply just took a walk outside in the calm atmosphere.
"Hey look, an airplane!" You exclaimed pointing to the sky. You leaned against the railing of the bridge getting a better position. Dazai positioned himself next to you.

"You like planes?" Dazai asked.

"I've had this fascination for them ever since I was young. I always loved flying, because of that feeling of freedom you fell in the clear blue sky." You said with a twinkle in your eye.
Dazai chuckled slightly at your expression.
'Freedom huh?' He thought. He looked at the sky, and then glanced back at you with a small smile.

"Oh!" You exclaimed suddenly.

"What?" He asked.

"There's a place I want to go to!" You declared. You ran off ahead of him, waiting for him to catch up at the end of the bridge.
"Come on slowpoke!" You called. He chuckled again at your actions.

'Who knew he/she had a child-like side?' He thought.
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You lead Dazai through the crowd of the city streets to a small bakery.
"This place, they're having a sale on Macaroons. I wanted to bring you and Atsushi here, but with the Mafia becoming active it's been hard to." You said. Dazai got the dreaded feeling again, as he always has when someone mentioned the mafia.

"Come on! This place has the best sweets ever!" You exclaimed. You took his hand in yours as you lead him into the shop. He took one look around the shop, everything screamed sweets, sugar, but the most beaming aspect..innocence.

You ordered some macaroons of different flavors to try. You and Dazai sat down to try the sweets, each of your faces lit up as you bit into them. You started to have conversations with Dazai, not anything work related, but just regular fun conversation. It was nice for a change. Dazai just gazed at you for sometime, the radiant expression, the way your body language matched the jovial tone of your voice, also the innocent aura you shined as you spoke more and more. It was something of a light that illuminated even the darkest depths of his thoughts. He didn't want it to end, he didn't want that light to dim. He would be damned if he let that happen.

"D-Dazai-san, are you ok? You're staring at me." You said as you blushed a bit. He stiffened slightly as he cleared his throat.
"Sorry, I was just thinking." He said. You were about to pester him until you saw the time on the clock.

"Ah, we should go back unless we want a lecture from Kunikida-san." You said. Dazai shuddered at the thought of suffering another one of Kunikida's scoldings. You and Dazai walked out of the shop walking lazily towards the bridge.

"Thank you (Y/n)-san." Dazai spoke up.
"Eh? For what?" You asked.

"For showing me what you meant." He said. You looked at him even more confused. He closed his eyes and hummed.
"So this is 'Taking the moment to live' I like it." He said satisfied.

"So if we're living in the moment that means.." He trailed off as he pecked your lips. It was a second of contact, but your whole face went red.
"W-W-Wha-" You stammered.

"Something like that." He said putting his fingers on his chin.

"Now maybe I should take a moment to plan out our loving double suicide." He said in a teasing tone. You looked at him still red faced, but started hitting him while walking.
"Dazai-san!" You exclaimed, but he just sheilded himself while laughing.

Eventually the past will catch up to him and he would have a plethora of things to deal with in the future, but for now he would rather just live in the moment surrounded by the light.

A/N: Suicide maniac is done. I have no idea what to do next. If anyone has any ideas they could suggest a character, premise, and what type (ex. Fluff, lemon, angst, etc.)