Absolute Choice - Chapter 506

Ding!{You've awakened the Echo System.}Scarlett Jerkins' dream was simple: wealth and the freedom to indulge. But when she let love in, she regretted it as her life was brutally cut short by her husband's family, ending a six-month coma but fate had other plans.Scarlett's eyes flickered open to an unfamiliar world, guided by an enigmatic system that revealed her new reality: an apocalypse world where monsters born from history deceased roamed free.She discovered that she was among the chosen members chosen by the system destined to save humanity. But this newfound purpose felt like a curse. Having escaped death only to face it again was a cruel twist of fate. And to make matters worse, her life was now tied to Garvin Johnson, her former rude, spoilt brat boss, whom she must protect at all costs.As she navigates this treacherous realm, she must confronts twisted creatures born from history's deceased. With the three elements at her command, she must gather resources, slay monsters, and safeguard Garvin.Scarlett's drive for survival becomes a quest for redemption, fueled by her past traumas and newfound purpose. As stakes escalate, Scarlett and Garvin face impossible choices, forging alliances with other chosen members who were handsome men and confronting enemies in a desperate bid to ensure humanity's survival.

The Third World War has been ended by the efforts of Kamijou Touma. With that, he vanished. With the Magic Side regrouping, the Sabbath for their followers has arrived.

In the headquarters of the Science Side, Academy City’s strongest Level 5 Esper Accelerator has washed his hands off the “Darkness.” Along with Last Order and Misaka Worst, his days pass by peacefully with no sign of GROUP.

Hamazura Shiage has formed a new ITEM with Kinuhata, Takitsubo and Mugino. Peace has come to the hands of the alumni who have “graduated” from Academy’s Dark Side at last… at least until a new evil “first year student” appears before them.

— This is a follow up to the popular Toaru Majutsu no Index light novel series, where Kamachi-Sensei has promised to deliver new premises and give a totally new flavor to the fights and plot developments

I am merely a reviewer, albeit the products I review are slightly different. For example, I review quantum computers, artificial intelligence, anti-gravity mech armor, planetary engines, sublight colonial ships, stellar detonators, etc…

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates