Kuroitsuki

Xion Aijawa thought his life was finally coming together. That is, until he tried saving a cat stuck in a tree, fell into a pit, and... died

In his disoriented sate of "Freshly dead" the silly Xion accepted a strange request and ended up transmigrating into the world full of dungeons and Mana. 

He became illegitimate child of Marquis family hated by his three siblings.

According to the memory of the original owner of the body, Xion only had a month to live.

So, taking the cover of the banquet, Xion ran away. Aided by a mysterious Mall System, he makes his way to the distant borderlands, hoping to put his past behind him. 

But fate has other plans-. Xion ends up saving Darius Rael Darkhelm, the feared Archduke of the North, notorious for his ruthless and deranged nature. 

The silly Xion tried to run away but...

 Xion's heart thumped loudly as Darius effortlessly pinned his wrists using only one hand.

"I've heard you tried to run away."

Darius gently caressed Xion's pale cheek, "That must be a lie... After all, I've given you things even the royal family can't have. Isn't that right, my dear healer?" 

Xion gulped when Darius's thumb brushed his lower lip as a chilling smirk remained on his handsome face.

 "I-I think I should leave, Your Grace. I've overstayed my welcome..."

The room grew cold, and struggling Xion shivered.

 Darius's green eyes dimmed before lighting up with a dangerous glint. 

Xion felt a pit growing in his stomach when he saw the deranged archduke smile. Darius never smiled. And whenever he did, it only meant trouble.

"You're right," Darius said calmly. "So, let's get married."

Xion "...!!!!"

[BL] Accidentally Becoming the Healer of the Deranged Archduke

Darius, startled by his own outrageous thoughts, turned his gaze to Xion.

The healer sat quietly, seemingly lost in his own world as his fingers idly traced patterns on the extra pillow resting on his lap.

Darius had asked for those. Xion tended to be in a daze, and that would always lead him foolishly bumping himself here and there.

At least, now his back would not hurt.

The archduke had never been one to let others affect his mood, yet Xion, without even trying seemed to do just that.

The healer had a way of slipping past his defences, planting himself into Darius' thoughts and disrupting his carefully maintained control.

Xion blinked. A slight frown crept onto his forehead before he began biting his lip.

What is making you look so troubled?

Darius' hand twitched, and a strange impulse rose within him. An urge to reach out, to break Xion's quiet contemplation, to make him look his way again.

"Don't hate it because it's you."