Dragon Prince Yuan - Chapter 1424 Heaven Master Zhou Yuan

Anna a normal girl waiting to have all her dreams come true falls into a deadly trap when she begins to desire someone she shouldn’t. After being shocked to reality of her boyfriends betrayal she dives head first into the flames of sin with the Don of the underworld.
Ren a ruthless cold heartless man lusts for someone he shouldn’t but can’t let go. He just didn“t realize how taboo she was an...

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

In the end, war couldn’t be extinguished. But, there was a transformation. Even in the heart of a worthless accomplice in murder who was indifferently continuing his task, there was a transformation. The massive weapon “Object”.

This was a weapon that changed the whole definition of war. An exchange student named Quenser, who was dispatched to the battlefield, met at the base a girl with a strange aura. The girl, dubbed “Elite”, is the pilot of “Object”. The near future. This diminutive boy had come to take on the role of standing up against the strongest weapon “Object” for the sake of the girl. This was the motive for their first meeting.