Contract marriage: His Sweet Wife and Cutest Twin Babies - Chapter 1562

Freshly turned eighteen, John Newman, a helpless nerd, suddenly gets video game abilities granted to him. A mysterious higher power, a secret Abyss of magic beneath the surface of the normal world, mages, martial artists, eroticism, tragedy and a harem of hot girls awaits.

After crossing over to another world which seemed to be a fusion between many anime worlds, The Fantasy System was unlocked for Mu Fan. After finishing the tasks given by the system, Fantasy points are given which allows him to gain access to the Fantasy store that was full of daily talents and more.

Yuuki Asuna: You know how to cook a lot of dishes. Can you teach me?

Sagiri: I don’t know anyone called Eromanga-Sensei.

Many more characters and interesting plots await us.

- Description from Novelupdates

Gu Qingcheng has a fiery temper and is a well-known little princess in Jiangcheng, and she has a good boyfriend who spoils her to the sky.

Only her boyfriend’s cousin, Huo Sicheng, opposed her everywhere, and the two were notoriously deadly rivals.

However, at the engagement banquet, when Gu Qingcheng regretted the marriage in public and announced that she was going to marry the disabled Huo Sicheng who was in a wheelchair, the jaws of all the guests dropped in shock.

Just when everyone thought that the couple would fight to the death in private, guessing that either one of them wanted to keep their husband widowed or the other wanted to keep their wife widowed, but the fact is…

“Husband, I’m stuck in traffic and come back a few minutes late. Open the door and let me in.” Gu Qingcheng knocked on the bedroom door with a pitiful expression.

“Sleeping in the living room.” Huo Shao’s indifferent voice came from the room.

“Honey, someone bullied me today.”

The person who bullied Gu Qingcheng disappeared the next day.

“Honey, they all say I’m so fierce.”

Huo Shao glanced at Gu Qingcheng, and opened his thin lips lightly: “They are talking nonsense, you are not fierce at all.”

From then on, Gu Qingcheng set fire to Huo Shao and handed firewood, Gu Qingcheng abused the scum and Huo Shao handed the knife, and the husband and wife worked together without getting tired.

Only Gu Qingcheng knew that before her rebirth, she was provoked and misunderstood by a scumbag to misunderstand Huo Sicheng. After her rebirth, she abused the scum and slapped him in the face, and loved Huo Sicheng with her life.

- Description from novelbuddy

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.