The Wandering of an Unstuck Stepbro: Multiverse Travel - Chapter 1: The beginning

Before getting married, Shen Xi knew that her fiancee had a girl he was secretly in love with for years.
After the divorce, she found out that the girl was her.

Before getting married, Shen Xi knew that there was going to be no love in her marriage.
After the divorce, she found that her ex-husband had married for love.

Before their marriage, her husband had a lot of money.
After the divorce, her ex-husband went bankrupt paying for the huge alimony.

Then, Shen Xi was reborn to the day of their marriage.
Shen Xi would just like to ask, would it kill you to say ‘I like you’??

- Description from Novelupdates

The year is 407 AD and Rome is at the precipice. In the West, a usurper by the name of Flavius Claudius Constantinus has declared himself emperor. By doing this, he and his traitor legions have fractured the Western Roman Empire into two. At the same time, the north bleeds! Countless germans swarm across the borders of the Empire and pillage its lands in their ruthless raids. Alaric, King of the Goths, rises to a position of prominence and threatens the ancient capital of the dying Empire with his barbarian hordes. As if things weren't bad enough, rumors from the east state that a mysterious power rises within the fogs of war, threatening to drown the Empire in a river of blood.

As a response to these threats, the indolent emperor Honorius has given orders to his supreme commander Flavius Stilicho to reclaim the province of Gaul from the usurper. However, should he leave the heartland of the Empire undefended, undoubtedly Alaric would invade. Thus, under the threat of barbarians at the gates, Stilicho dispatches a young roman general by the name of Titus Claudius Marcellus to bring an end to the reign of the usurper. Will Rome fall to the tides of barbarians and traitors alike? Or can Marcellus restore a world collapsing around him? Find out in Heir of Aurelian!

A 24-year-old woman traveled to the novel world due to a plane crash. She takes over the body of a cannon fodder who bears the same name as her. She traveled to a time when everything was scarce. The moment she opened her eyes, she was told that in two months, she would marry a lame man.Flustered girl : “Why didn't anyone tell me that my fiancé is so good-looking?”Proud fiancé : “Baby, I'm glad you like my face and body. Shall I warm your bed now?”Confused girl : “Didn't they say you are a cripple? How can you move so vigorously?”Vigorous husband : “Where did you hear such rumors? It seems that I need to prove myself to you.”Shy girl : “So shameless...”

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.