Toaru Majutsu no Index - Volume 5, Prologue: Night of Opening. Good_Bye_Yesterday.

Xu Mumu traveled into a book and became the female protagonist's cousin. Her family was considered the worst by others, but Xu Mumu found them lovable. The troublemaking mom, drama king dad, lazy brother, and bratty younger brother made for a lively household.So, while her cousin was picking up money, Xu Mumu received a scholarship. When her cousin's family started a business, her brother went to the city to work. By the time her cousin's family became wealthy, Xu Mumu had already taken her family to the city.

Lynn traversed the multiverse and was reborn as a half-blood devil.Fortunately, he awakened a system that allowed him to...

On modern-day Earth, An Lin seems to have been abandoned by God.
When his father suddenly disappears, An Lin is left with his father’s immense debt, putting his life at risk.
After being forced to a rooftop by his pursuing creditors, An Lin is unexpectedly swept off his feet and brought to the ground safely.

After learning that he was saved by an Immortal, An Lin is gifted, seemingly out of pure generosity, the ‘God Of War System,’ and a pass to a new realm.
Follow An Lin as he experiences a whole new world of legends, meets many new friends, acquires legendary weapons and tools, and starts on his path of becoming a powerful cultivator. There is never a dull time in An Lin’s new life with his ‘great’ new system!

- Description from Novelupdates

At the age of fourteen, he inherited a dilapidated country from the older generation.

With his personal ability, in just a few years, this country has directly transformed from such a situation to a country that attracts attention.

How will he gradually become the master of the entire world? What are the secrets of the pirate world?

Not warm-blooded, dark-bellied, slightly cold-blooded.