Reawakened with a Dual Survival System in the Apocalypse. - Chapter 41 - 72 transformation.

To this day, Associate Professor Li is still somewhat puzzled.Why has the Immortal Cultivation Realm changed so much in just a hundred years?Looking at the new Sword Sect elective textbook on the table, Li became more silent.[Chapter 1, Introduction to Sword Control Theory][Chapter 2, Maintenance and Care of Qinghe Series Thousand Machines Cruiser][Chapter 3, Postpartum Care of Sword-Toothed Beasts]......Closing the textbook, Li gave up thinking.But just as he was gathering his teaching materials to go to class, a brick-thick book was thrown in through the window.'You Let Me Enter the Sword Sect'Looking at this broken book, Associate Professor Li Guanqi recalled the afternoon he brought Zhang Ze into the Sword Sect.

The once greatest Saint underneath the heavens has been reborn after one hundred years. He cultivates with mighty skills, and he fights to once again reach the top of the world!

Failing in his job hunting, Sanada Kyouichirou was hopeless in this society. When kyouichirou had thrown himself towards the bottom of a cliff. When he woke up his body had returned towards when he was in fifth grade of elementary school. He did not want to have any regrets in this life so he had decided on building up an harem in this second life.

The elder sister that he admired, a senior and president of the student council at a school for rich young girls, a strong minded upper classman at school. The poison fang of Kyouichirou who had pretended to be a innocent child attacks those girls.

Being a book lover, Luna has always wished that if there was a next life, she would be transmigrated to one of the genres she loves to read about. It was just a wish though, but who would have thought it would happen so soon?!Reverse Harem - Check! Super handsome and hot men - Check! Being rich and pretty - Check!But are there really no take backs for a seemingly perfect life?