atsushi oneshots 6

mine//Atsushi x chuuya//

-fluff and bit of nsfw??

Warning: biting kink? Possibly mention of suicide(dazai)???

(Atsushi tiger instincts come out?)

Short(933)
Not canon reaction
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Third person pov

Atsushi and chuuya have been together for quite a while now, when they met, they immediately fell in love. No one really knows about the relationship, chuuya and atsushi never talked about telling people about the relationship. Atsushi surprising  doesn't like how no one knows because people still flirt with his boyfriend. Chuuya may be quite possessive but atsushi is also very possessive. It might be because of atsushi tiger instincts on why he so possessive over chuuya. Atsushi wants people to know that chuuya is taken, he basically wants to claim chuuya as his mate but atsushi has never acting on this instinct until one day.

The agency and port mafia were recently working together because of some ability user and of course they succeeded so they decided to have a party to celebrate the win. There would be a lot of people there, and chuuya was quite popular with anyone, chuuya was pretty hot so many people were flirt with him. Atsushi wasn't very happy about this, chuuya was his and only his. Atsushi was staring at chuuya as dazai flirts, dazai was drunk and he mostly flirts to tease chuuya so there's no romance behind it but it's still bugs atsushi and chuuya hates it, he tried to get dazai to stop but dazai doesn't listen.

Atsushi couldn't help but growl, akutagawa was right next to atsushi so he heard the growl. Akutagawa slowly looked at atsushi, akutagawa was honestly a bit concerned and confused. "Did..you just growl?" Akutagawa asked, he honestly though he was hearing things, atsushi just growl again. "Shut your damm mouth akutagawa" atsushi said, akutagawa was about to argue but didn't, he didn't want to deal with a angry tiger.

Atsushi keep on watching chuuya, once chuuya went into the bathroom, atsushi decided to finally act on his instincts, he was going to claim chuuya. "Atsushi? Are you alright?" Chuuya asked as he looked at his boyfriend, it was obvious that atsushi was upset. Atsushi didn't say anything and suddenly chuuya was pin to the wall, chuuya was about to say something but atsushi kisses chuuya. The kisses didn't last for a long and immensely atsushi went straight to chuuya neck. Chuuya looked confused as slowly atsushi started to lick chuuya neck and suddenly atsushi bite down.

Chuuya was surprised, he didn't expect this, chuuya honestly couldn't help but moan, it felt great. No one knows this expect for chuuya, ranpo and dazai but atsushi has fangs because of his ability, it was mystery on how dazai knows about the fangs. Chuuya could feel the fangs, it felt great and slowly atsushi pulled back. Atsushi quickly licked up the blood goes coming out, chuuya just sighed. "Holy shit, I have a biting kink." Chuuya said, atsushi just looked away but he didn't move at all. "What wrong?" Chuuya asked as he looked at his boyfriend face, atsushi just looked down. "I hate how everyone flirt with you.." Atsushi slowly started to say, chuuya just sigh as he hold his boyfriend face.

"Atsushi, I won't leave you, no matter what." Chuuya softly said as he kisses atsushi, atsushi just smiles, he was glad to hear that. "But I don't understand why this has to do with you biting me." Chuuya said, atsushi was about to answer but suddenly chuuya realized it. "Oh my god, you were claiming me!" Chuuya said, atsushi didn't want what to say so he just nodded. "I just...wanted everyone to know that you're mine, I understand if you want to cover up the mark." atsushi said, chuuya just chuckled, he wasn't going to cover the markup at all.

"I ain't going to cover it up, I'll show it to everyone, everyone will know I'm your." Chuuya said, atsushi looks surprised and was very happy to hear that. "I love you." Atsushi said, chuuya just smile as he kisses atsushi again. "I love you too." Chuuya said and then they walk out in the bathroom no one noticed, they were gone but dazai definitely noticed the big ass mark on chuuya neck. "Oh god, it looks someone tried to bite a piece out of your neck." Dazai said, chuuya just smirked. "My boyfriend wanted everyone to know that I was his." Chuuya calmly said, dazai just looked at the mark like it was a dinosaur fossil.

"Oh shit, those are fangs mark, the only person that has fangs mark is..oh my god.." Dazai said, he was slowly realizing who it was and chuuya couldn't help but laugh. "you're with my student!" Dazai whisper-yell to chuuya, chuuya just smirked and nod. "I really don't want my head to be ripped off, that's not the way I want to die." Dazai suddenly said as he looked at atsushi and then chuuya, dazai just couldn't believe it. Other people start to notice the marks on chuuya neck, chuuya proudly showed them off but they didn't know who made it only ranpo and dazai actually knew.

After hours the party was finally over, and atsushi and chuuya were alone together. "you can mark me up, all you want." Chuuya said as he hold atsushi, atsushi was licking and nibbling on chuuya neck. It was actually very adorable. "I love you." Atsushi softly said as he nuzzles into the mark, chuuya just sighed. "I love you too.." Chuuya softly said and then they fell asleep like that.

(🤔🤷‍♀️)