My Necromancer Class - Chapter 50: Choices 1

Xiao Chen, “the waste” of Xiao clan, had his engagement to the Young Lady of the Yang clan renounced.

And when he arrived at the sect that sympathized with him and took him in, he found corpses strewn all over the place and a mist of blood in the air. The sect was exterminated by a mysterious group that was looking for the ‘Wind Spirit Jade’.

He himself was left behind only half-dead for ‘wastes do not deserve to die by their hand’. Humiliated once more and on the verge of death, in the surroundings strangeness happened. A whirlpool sucked up the blood mist and diverted it into Xiao Chen’s forehead, transforming and enhancing his body.

- Description from Novelupdates

She was originally an assassin. After rebirth, she was reduced to another world’s Di family’s most inferior concubine-born daughter. With an extremely hideous appearance and no way to cultivate, she was the object of everyone’s humiliation and bullying.

"Marry me. Once we're married, I will be loyal to you for life—as long as you keep me alive." Qiao Jiusheng was pushed into the water by her older twin sister, had her identity stolen, losing her old love and life. With no other choice, she seeks out Fang Yusheng, the blind man rumored to have no interest in women. With blank and empty eyes, he says, "Sure." In her past life, she was betrayed by her sister and trapped in the basement. Her tongue was cut off as she watched her sister take her place, winning overall her loved ones, marrying her lover of six years, and starting a family with him. Now that she's back to a time before it all went wrong, Qiao Jiusheng escapes from the river and goes to her boyfriend's older half-brother. She puts on a mask and marries him, to fight their common enemy. The wheels of fate begin to spin, and the severed threads of destiny are once again entwined... Before their wedding, he tells her, "Don't peek at me so openly just because I'm blind and can't see you." On the night of their wedding, he tells her," You don't have to dress like a bear. I don't care for women." Half a year after their wedding, just because she gives another man another look, Fang Yusheng covers her laptop, phone, bedside drawers, desk, and wallet with nothing but his selfies.

This is a cliché story about two young people saving the world.