One Piece: I am Imu - Chapter 312: Annihilation Unleashed

This is a ‘rebirth’ story where Chen Rong, the heroine, finds her second chance at life after burning herself to death. Set in the Eastern Jin era when bureaucrats and their lofty yet equally hypocritical and oppressive ideas once ruled the empire, Chen Rong is made to use her past life’s experience to survive and hopefully find happiness this time around.

- Description from Novelupdates

A mysterious wave of black mist swept over the whole planet, resulting in monsters and super power holders.And Jiang Hou awakens a talent under the corruption, becoming a... colossal beast of destruction.

Kai is refused help from the president and thrown back into ground zero, where he meets a man whom he shows kindness to. As an act of repayment Kai is taken to the under tunnel of the city where he discovers a secret office belonging to his father. The stranger seemed to know what he was looking for after some time he handed over a box to Kai. A melodic robo voice came from the box -|DNA ACTIVATION VERIFIED|- -|ASTRAL NODE IS ONLINE|- -|SYSTEM HAS BEGUN ACTIVATING|- -|AWAITING MANUAL OVERRIDE TO TURN ON SYSTEM|- Kai is gifted a rare astral node and resolves to join the academy to save his dying sister from the F-X7 disease and also escape the life of poverty they were stuck in. -|PASSWORD CORRECT|- -|MANUAL OVERRIDE SUCCESSFUL|- -|SYSTEM IS UPDATING, PLEASE BE PATIENT|- -|SYSTEM UPDATE IS COMPLETE|- -|SYSTEM IS ONLINE|- Joining the academy does no guarantee his success since he has no powers. But he must survive since that has been his goal after being sold to slavery. -|USER: KAI HALSTEN|- -|RACE: HUMAN|- -|GENDER: MALE|- -|LEVEL: ONE|- -|EXP: 0/100|- -|HP: 10/10|- -|BEGINNING BONDING|-

​The world, Earth, was devastated by the Great Incursion, an apocalyptic invasion by dimension-hopping monsters. Humanity's only hope now lies in Galaxy Fall, a newly accessible parallel world where they can gain strength through a System of quests and missions.​Five hours after the Invasion, the betrayed survivor Mirabella is mysteriously reborn and gains a unique power: the [Master Account System].Her initial skill is the deceptively simple but devastating 'Multiplier x100', which applies a 100 times buff to all her offensive capabilities, including physical attacks, spirit energy skills, and damage-over-time effects.​Mirabella must now transform from a silent survivor into the world's most feared warrior, who was only scared of one thing, which is?“I Hope I don't run out of opponents in Both worlds.”