7th Demon Prince Jilbagias' Chronicle of Demon Kingdom Toppling - Chapter 14: Former Hero, Alexander

The arrival of origin ability era. Many berserk beasts spawned. Humans with superpowers blooming like mushrooms. Su Hao is just an ordinary 3rd year high school student who had mastered a lowly grade origin ability named
“Model analysis”.

Male lead quick transmigration romance— originally called Soul Pawn Shop.

Hell’s ruler Xie Fei travelled through three thousand worlds to guide traders to redemption.

—Ding-dong! Welcome to the Soul Pawn Shop.

Note: 1V1 romance

- Description from Novelupdates

Soldier King Li Qiang, who was part of the Special Forces ace army's Winged Dragon commandos, had accidentally broken the relationship between his fiancee and his adulterer and had lost his life because of this! Under the effects of the treasure, he was reborn as a normal high school student, and actually discovered that the school beauty, Lin Ya Shi, was the daughter of his fiancee and his adulterer. In order to take revenge on his enemy, he used the opportunity to get close to the Lin family while the school beauty was his bodyguard, but he discovered that a huge crisis was approaching everyone …

A 20-year-old genius medical student transmigrated to a book she read during an experiment and became a female supporting character named Mo Li.