Diluc mimics.

He can't remember a time of his life where he didn't mimic, in all honesty. Perhaps when he was very little, still learning about the world and how to interact, but regardless--

Diluc mimics, and he isn't sure where he ends and others begin. It doesn't make sense, sometimes.

Diluc, at his deepest core, is uncomfortable with the world. He doesn't like how loud people can be and how unpredictable. He doesn't understand why they react badly when he's honest.

Diluc and Kaeya being aware of how intimidating they can be individually and being careful with each other, moreso at the beginning of their relationship post Diluc's return.

Diluc yells a lot - it was a... necessity, so to speak, during his travels. No one pays attention to soft spoken people, or soft spoken commands.

Kaeya's getting on his nerves and Diluc snaps and shouts at him from across the house.

Kaeya immediately shuts up, but it's all too silent. Diluc's stomach churns.

Diluc having insomnia

It may appear he keeps himself up at night intentionally doing vigilante work, but really, he cannot stand laying in bed staring up at the ceiling anymore. He doesn't remember being like that as a kid. Perhaps it's from needing to constantly be vigilant during his journey, sleeping light and little... He was so exhausted, but he had to keep moving. Stay on his toes and never let his guard down.

Thinking of some aceluc tonight.

Diluc knew that he wasn't normal from a young age, but he didn't fully comprehend it at the time. When others were giggling and blushing about other people, gossiping about first kisses, he didn't understand. It was okay, though. He didn't have to understand, as he was still young - he was only 11! He still had time, and when he was grown up, he'd start feeling the same way.

He was content about it at first. Maybe a little confused and lonely, but he was okay.

// NSFW, #luckae, Maayul's Kinktober Day 17: Oviposition (continued from day 12), egg laying, egg birthing //

Diluc shuddered. Gods, it's been a while since the last time he'd gotten to do this... Fuck, he forgot about how good it felt. It smarted in the best ways possible.

https://twitter.com/fatesresonance/status/1580439796169977856

"Diluc, what is--"

Diluc shushed him, a hand over Kaeya's mouth. "Relax."

The bulge traveled down Diluc's cock, his shaft stretched around the object. Upon reaching the place they joined, Diluc grunted, pushing his hips forward.

// NSFW, #luckae, Maayul's Kinktober Day 5: Wayersports, A/B/O, slight inflation/mpreg, pussykae, "sweetpea"

Kaeya keened as Diluc's knot popped inside, sending his orgasm crashing upon him. His pussy throbbed, fluttering around Diluc's cock with each wave of pleasure. Fuck, it reached so deep inside. Pressed on his organs, warm cum flooding him. Kaeya drooled with his tongue lolled.

Diluc groaned into Kaeya's bared neck as the last of his cum filled him up. Kaeya's pussy milked him of every last drop.

// NSFW, #kaeluc, pussyluc, piss kink, non-consent, drugging, maybe ooc

I have this scenario in my head of Diluc tied up very similarly to one of my lrts, wrists bound and above his head with rope. He's fully clothed, but not for long.

Kaeya circles him, leering. "It's such a shame you cover up so much," Kaeya says. "But it'll be a treat once I strip you, piece by piece."

And he does. Kaeya tears his clothing off, listening to the seams pop, fabric dropping to the floor, and Diluc's muffled protests through his gag.