Toaru Majutsu no Index: New Testament - Volume 17, Chapter 2: Or Escape Provides a Counterattack - Social_Network_Slayer.

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

When he woke up, Rono traveled to the world of pirates.

I thought I could live happily and peacefully.

But the appearance of Tianlong people broke this situation!

Rono, watching his parents being shot to death by Tianlong people!

Under extreme anger, Rono awakened the system and vowed to kill all the Tianlong people!

From then on, a [Extremely Evil One] who specialized in hunting Tianlong people was born!

Wherever Rono went, the Tianlong people shivered!

Admiral?

Two more and I will kill all of you rubbish!

Karp: The Evil One?

He is a monster created by the Tianlong people, and one day the Tianlong people will pay for it!

Roger: 【One Piece】?

Compared with [The Evil One], it’s nothing but a cloud!

Whitebeard: [The strongest man in the world]?

No, no, Rono is the strongest!

Rocks: In terms of killing Tianlong people, Rono is the first, I am second, everyone else is garbage!

- Description from novelbuddy

Hadica was built around one of five Towers, an infinite structure filled with floors of monsters, magic, and treasures that the city plunders like clockwork. Most of the city, at least. Growing up in Westhill, Micah's family abstained from all of their Tower's bounties. He became an [Alchemist] at an age younger than most and just wanted to level in peace, but soon ran out of mundane ingredients to brew into potions. Ryan is a budding [Fighter] with the strange ability to mimic beasts, including monsters, but he doesn't understand it or even himself. After a Tower climb goes horribly wrong, their lives and the world around them begin to change as they try to figure out who they want to be.The Salamanders is a slow-paced story about characters growing up in and exploring a fantasy setting. It updates sporadically. Please mind the tags.