DRV3 headcanons, one-shots and other stuff [COMPLETED]

(O/S) Shuichi x Fem! Hyper! Reader x Kokichi

Requested by CinnamonRollChiaki. Enjoy!
Fic title: Sugar-Rush Showdown!

Y/N's POV

Kirumi had made the fatal mistake of giving me too much sugar. She also killed a man. The first part is more important.
Anyway, I was going to try and keep everything happy since people were super sad and stuff. My mind was fuzzy with sugar. And so, I decided to pay Shuichi and Kokichi a visit.
I did it at night so that people wouldn't be creeped out by my constant giggling since everyone was pretty on edge and stuff. I'd come up with a master plan that would lighten the mood.
Not murder. Just theft.
I slipped into Shuichi's room while he was out training with Kaito. I nabbed his hat, and picked the lock to Kokichi's room. Kokichi was fast asleep, snoring softly as I swiping his checkered scarf from his desk. Then, I darted out.
And thus, the fun began.

Kokichi's POV

"Where's my hat?"
"Where's my scarf?"
Shuichi and I asked the question at the same time, accusation burning in our throats as we stood, practically nose-to-nose with our fingers jabbed at the other.
"Don't ask me. Where's my hat?"
"What makes you think I know? Where the Hell is my scarf?!"
We backed up a bit, thinking and looking around. Shuichi went to grab the peak of his hat only to grab at air. He lowered his hand, sheepishly.
"Who would be brave enough to steal from me?"
The question took a second to sink in.
The answer was said in unison.
"Y/N L/N."
Shuichi clasped a hand over his mouth. "Oh my God, didn't Kirumi give her a lot of sugar yesterday?"
"So it's definitely her." I was almost purring with amusement. Well played, Y/N, looks like my lock-picking skills have rubbed off on you. In complete honesty, I found her infatuating to watch. She was like me, only more... enthusiastic.
In truth, I wanted her.
I wasn't naive - Shuichi clearly had fallen for her too. Opposites attract, I guess.
"Hey, Saihara." I said as a lightbulb moment struck me like a (truth) bullet. "Whoever finds her first gets to confess first and keeps the both articles of clothing."
"Was it obvious that I liked her?"
"Oh definitely. You even wrote about in your journal."
"HOW DID YOU KNOW ABOUT MY— WHY THE HELL WOULD I WANT YOUR SCARF?!"
"Dunno. All I know is that I really want both Y/N and your hat. Your hat on Y/N."
"Okay, fine, but—"
"Okay, bye!"
"Wait— KOKICHI OMA, I SWEAR TO GOD—!"
The second he agreed, I was gone. I basically flew out of the dormitory, scanning the courtyard. I spotted Korekiyo sulking, so I approached him.
"Oi! SHSL Weirdo! Seen Y/N?"
"Yes, she just ran past me towards the main school building. I just can't believe that Kirumi is truly dead—"
"Okay, thank you, bye!"
Oh, I was definitely going to win this.

Shuichi's POV

If Kokichi knew anything about Y/N, he would be checking the canteen. Seeing him bolt into courtyard, I knew that I still had a shot at confessing first.
I made beeline for the kitchen and, sure enough, saw the scarf-and-hat-wearing thief giggling to themselves.
"Y/N, I want my hat back!"
She chuckled, "Come and get me, sucker!"
For the first time since the Kirumi's death, I laughed. "Maybe I will! Also, I've been meaning to tell you—"
That girl leapt out of the window of the kitchen.
Let me reiterate - she jumped out of the window to where Kokichi was.
Dread swallowed me, and I quickly dived out after her. I obviously fell on the ground and had to scramble up and scan the yard.
I saw the checked scarf and baseball cap a mile away.
Bingo.
Sprinting across the yard, I found myself shoulder-to-shoulder with Kokichi Oma himself.
"Nishishi~! I was just about to head for the main building, too! Good thing I stayed. Now," he directed his gaze to Y/N. "Please marry me."
The hyper student stopped in her tracks, her grinning morphing into a look of shock. Her e/c eyes popped and her eyebrows were raised. "W-What?!"
"Wait, Kokichi, no— Y/N please pick me! Seriously, I need my hat back."
"Marry me instead of that nerd! I want my scarf back!"

Shuichi's Ending (Y/N's POV)

I stared at the two students in shock. My shock soon morphed into joy. I plucked the hat from my head and placed it directly onto Saihara's head.
Kokichi snatched his scarf back from around my neck.
"...keep your scarf, I don't care about the deal anymore."
I pecked Shuichi on the cheek, hugging him and smiling. My sugar-rush had dulled, slightly, so the moment was at least a tad more sentimental than it would have been while I was hyper.
"Think fast!" Kokichi grinned, nabbing Shuichi's hat and darting away.
Him and I exchanged look. "Get it back tomorrow?" I asked, feeling the crash kick in.
He nodded, practically holding my up at this point. "Tomorrow."

Kokichi's Ending (Y/N's POV)

I untied the scarf from around my neck, holding it out to Kokichi. "Okay, I won't marry you, but we can date?"
"Works for me, my dearest DICE queen!" He cheered, hugging my tightly and pecking my cheek. He also plucked the hat from my hand, placing it on my head as Shuichi looked mortified.
"But... my hat..."
"Hush, Shushu, we're having a moment."
"But—"
"SAIHARA."
"FINE. I'LL GET IT BACK TOMORROW!" His face grew more neutral as he chortled his anger off. "Seriously, though, I hope you two are happy together."
I yawned, tears pricking at the corners of my eyes. The sugar crash was hitting my like a firetruck. I leaned on Kokichi, who stumbled and tried to hold my up. "I'm... yeah, I should take you to my room."
I murmured in my tiredness. "I wuv you."
His squeal jolted me slightly more awake.
"I WUV YOU TOO."

Polyamorous Ending (Y/N's POV)

I handed them each their respective article of clothing back. "Well, care to share?"
Shuichi grew red. "Wait, what—?!"
"Shu, I saw your diary." Kokichi chuckled. "I know you think I'm hot but you're, and I quote, 'not gay just able to appreciate cute guys'."
"KOKICHI—!" I was practically dying with laughter at this point that this was actually going as well as I was hopinh.
"Well, it's cool. You're both pretty cute, so I'm down. Shu? How about you?"
"Sure but I'm not gay."
"Because you're bi."
"Y/N, I swear—"

No Choice Ending (Y/N's POV)

As I was about to politely ask for a bit more time to decide, my sugar-rush decided to screw me over and have the sugar crash hit me like a truth bullet.
I collapsed onto the grass, and I felt myself being held up by the two students.
"Uh... Y/N? Is that a yes?"
"Kokichi!"

Word count - 1178.