Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 16 - 16-43. The Four Heroes (1)

Xia Yangyang receives her 20th birthday present by witnessing her boyfriend and her best friend in bed.

The next moment, she ends up marrying the most eligible and wealthiest bachelor in the city, Gu Qichen.

From then on, she levels up and becomes invincible.

Xia Yangyang’s jerk ex-boyfriend tries to win her back, while her scheming friend plots against her. Mr Gu comes to her rescue and seeks revenge on her behalf.

She has a vicious half-sister and a stepmother who makes things difficult for her. Mr Gu retaliates and teaches them a lesson.

Everyone knows that Mr Gu is ruthless and cold-blooded. But no one has ever seen how he pampers and dotes on his wife…

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Fu Qingjun has transmigrated into a parallel world and discovered that his parallel self just committed suicide.With over 6,000 souls in his body, he feels his head throbbing. The next moment, he finds that his hair grows rapidly and that he could inject wisdom into a creature's brain through his hair.

This appears to be this type of story:

Soon after knowing that she was going to marry Song Shi An, Su Tang made a firm resolution to barter to get a bill of divorce within one month!

The reasons are many with one being crucial, that pan of cold noodles has been an eyesore for a very long time!

Actually, it is this type of story:

Has lightning, dog blood, even more it has big meat. Love steamed buns, love beautiful meals, as well as love household tussles.

Go out to build the family fortune, enter the house to steadily accompany the lady of the house! Who dares to interfere? Stiff penalties being served!

- Description from Novelupdates

He was supposed to transmigrate to a magic world, but due to an accident, he ended up trapped in a massive library. The system assigned him a task: for every book he read, he would be rewarded with mana stones, until he finished reading all the books. A trillion years later, Daniel finally finished the last book! [Ding, detecting that the host has finished the final book. Calculating system rewards.] [Ding, reward calculation complete. Dispatching rewards. The total number of mana stones the host has accumulated: 99999999...9999.] “Damn, am I that rich now?” [Ding, detecting that the host has completed the task. Loading world...] ... Goddess of Fate: “Daniel, my divine realm needs expansion. Could you sponsor me with some mana stones?” God of Storm: “Daniel, the divine punishment is about to descend. Could you lend me some power to help me get through it?”