MTL - How to Feed an Abyss! - Chapter 99 explore underground

A series of short stories in the world of Toaru Majutsu no Index organized into chapters featuring Kanzaki Kaori as the protagonist, going around the world and space doing missions for the Church of Necessary Evil, however, there is more than meets the eye as each incident is connected.

One chapter was bundled with each limited edition release of the Toaru Kagaku no Railgun anime DVD and BDs, with all of them together being equivalent to a single normal Toaru Majutsu no Index volume

She was the godly thief of the 24th century, yet she was reincarnated as a good-for-nothing idiot with no parents. Not only that, she had to bend her will according to her relatives’ mood. Idiot? Trash? Very well, sooner or later, she will show these group of silly earthlings what it means to be too late for regrets!

Battle-qi? Magic? Her talent on both magic and martial arts will mortify every genius in existence. The position of the clan chief? The mythological Vermilion Bird? Want them? So sorry~ She already took them!

But who will tell her, that the cute boy who gets carsick easily was really the mythological Vermilion Bird? Then, what about the elder that’s residing in her body, just which deity does that mysterious soul belong to? Furthermore……

Why was it that other people’s companion were those kind of domineering, and incomparably mighty type. Why was it the ones around her were either an evil merchant or a sly fox, a useless nerd or a playboy, the worst is this sick pretty boy! What happened to ruling the world, and standing above all else? Please don’t f*ck with me!

- Description from novelupdates

He is an undead who is devoid of all humanity, he is the one and only supreme overlord, he is a man who has severe mysophobia.

A piece of divorce paper sent Xia Xinghe into a state of destitution. However, a car accident later, she transformed into a professional hacker with more money than she could ever spend. All those that have belittled, bullied and laughed at me, please line up, I’ll show you what the meaning of face-slapping is! Wait, wait, wait. That guy over there, the ex-husband that I no longer have any relations with, don’t cut in line. What, you want to help me face-slap these people? “Not only that I will help you face-slap myself!” The wickedly handsome man with billions of dollar in estate raised his own palm to slap his own face without reservation!

- Description from Novelupdates