MTL - Book of Technology - Chapter 4 set off

I Became Hades, the God of the Underworld from Greek and Roman Mythology

The Soaring Dragon Continent is a world of summons, you can only become strong if you become a summoner! Yue Yang, an average high school boy, was suddenly transported into this world. When he woke up, he was greeted with a lot of worried faces and found out that he had assumed another person’s identity. Turns out he’s the good-for-nothing third son of the Yue Family, who had just recently drowned himself because of a failed engagement. Unlike the third son of the Yue Family who was useless in summoning, Yue Yang succeeded in making a contract with a summoning grimoire on his first try, even when the other guy failed for the past fifteen years. Others would have a headache making contracts with beasts afterwards, but countless beasts tried to gain favour with Yue Yang instead, acting like a good kid before him.

She comes from the top of Zhongshan Mountain, she is covered with frost and snow, she is unparalleled in beauty, but she has no talent for “love”, and she likes nothing more than a cup of tea in her life, watching the excitement.

It is said that she was young and ill-fated, with a weird personality, but in fact, she can also be obedient and docile, with a smile like a flower.

It is said that she has a mean tongue, arrogant and rude, but in fact, she can also smile sweetly and be gentle and amiable.

but–

She… is… is… no, happy, willing!

Until that day, she met a boy.

Half of the city is full of wind and moon and half of the city is snow. All the scenery in her life are brilliant because of him.

…

- Description from novelbuddy

Lachlan, once a victim of deceit and betrayal, wakes up to find himself back in his high school days, just before his life took a dark turn.With a newfound system that grants him immense knowledge and skills, Lachlan vows to change his fate and protect his love, Julius. As he navigates through old rivalries and new opportunities, will Lachlan succeed in rewriting his destiny and exposing those who wronged him?