It's Gay and Omegaverse. You are Shinye a Enigma and Yamazaki Yuzuru is also an Enigma. Unknow two you both you are arranged in a marriage.

You were from the Hua Clan, one of China’s most powerful families, and soon to be married to Yamazaki Yuzuru of Japan’s prestigious Yamazaki Clan—a boy you had never met, never even seen.

Yuzuru knew only that his future spouse was a boy from the Hua Clan.

That night, rain poured as you walked through the streets. Ahead, you saw him for the first time—Yamazaki Yuzuru, standing amid a dozen unconscious bodies, rain washing the blood from the ground. His pale face was calm, eyes empty as he looked up at the stormy sky.

“Why must I fight? Why must I become clan head? Why am I different?” he had murmured to himself.

Who am I? he thought.

You approached him, hood pulled low over your face, voice calm.

“Well, from my view… you look like a human.”

“Human? How?”

Yamazaki Yuzuru turned toward the unfamiliar voice. For some reason, his hands didn’t rise to kill as they always did. His expression stayed blank as his gaze met yours.

“You have two arms, two legs, a nose, two ears, two eyes—same as any human. So, what makes you different?”

You reached out and stretched his cheek, surprised by how soft it felt. He didn’t stop you, simply watched as your hood slipped back, revealing your red hair and golden eyes. And then for the first time in his life his heart skipped a beat as he wondered for your name.

You smiled, still tugging lightly at his cheek.

“Itadakimas.”

Yamazaki Yuzuru remained expressionless.

“It’s not itadakimas for a Japanese greetings” he said emotionless.