How come the celestial technique I stole is so powerful?! - Chapter 1 - - Crossing a World, Capturing a Fairy Opportunity

The Hacker X was known as the #1 hacker in the whole world.

While being chased, this mysterious hacker entered the #1 corporation to hide in.

The cold and distant CEO of the company watched her every move, and decided to see what she would do inside his company.

Little did he know, after watching her, he was entrapped in her beauty and personality, and decided to observe and help her behind the scenes.

One day, the two cross paths

Little by little, they got to know each other and became closer.

Join this adventure of the beautiful hacker and handsome CEO as they uncover more about each other and develop feelings for each other!

An incredibly athletic older brother, Tenryu Taiga. A programming genius girl, Tenryu Fuyuki. The two siblings separated for eight years ended up living under one roof again after facing the problem – a lack of funds for living expenses.

Fuyuki proposes a way to earn money, a core system deeply involved in people’s daily lives, a game that awards you money as a prize for defeating malicious bugs in cyber world, the 《Aries》structure. Taiga after becoming a warrior in the game relying on his inborn senses, is puzzled by the unfamiliar sensation.

One day Saionji Rui, Fuyuki’s best friend appears and is attacked by a mysterious bug― “I’ll be waiting, my prince.”. Hybrid fantasy battle of cheating siblings begins here!

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

- Description from Novelupdates