The Emperor's Beloved: Transmigration

When a novel from the future contains enough energy, it can give rise to Three Thousand Worlds, all of which are kept stable by an organization called the Space-Time Administration.

Some worlds are extremely dangerous, and fewer and fewer of the Administration's agents return from them. The Administration has no choice but to have its System distribute huge recruitment ads everywhere. Even so, applicants are few and far between.

He Yunran is the “lucky one” who gets hit by one of those ads.

With less than three digits in her bank account, He Yunran thinks it over and agrees, hoping to fulfill her dream of roaming the world as soon as possible.

What she doesn't know is that after she completes her mission and leaves, someone will go mad.

A heroine who only wants to heal people and return to her original world so she can roam freely X a world-weary tyrant

(An alternate history setting. No novel can suit everyone's tastes, so please don't make personal attacks. Mwah~)