Married to the Male Lead's Brother - Chapter 33:

The protagonist, having degenerated into a “loser” after being unable to find employment, gets caught up in someone else’s attempt to commit suicide-by-train and ends up traveling to another world. The numerous cheat powers he demands from God are all granted to him. But contrary to expectations, these powers bring about disastrous consequences for the protagonist.

Having reincarnated into another world, the optimistic protagonist (Yuuri) starts his(her) heart-warming training days with his(her) teacher.

Years ago, Earth was indoctrinated into the “System.”Earth was not the only place with the System, however. With the System came the other races, Invaders. The Invaders had one goal, to obtain ownership of this new habitable planet. This created a bloodbath, and for years the war raged.This didn't really have much to do with Derek. Derek was kind of a loner. Yeah, he enjoyed the occasional chat or drink with others, but he never stayed in one place too long or really got to know anybody new.Derek did happen to be rather strong. After the years of fighting monster and Invaders alone, he had become quite adept at surviving. One thing that helped keep him alive was his refusal to get involved with others. He rarely cooperated with teams.One day, Derek broke his rules and decided to lend some help, as the mission didn't seem too hard. He should have stuck to being alone.

Vincent Strider was a gun for hire who made a living by killing whoever it was his clients wanted dead. But during one mission, he died in a fierce gunfight. However, death was not the end for him. Vincent found himself reincarnated in another world, facing a floating interface that flickered before his eyes.[Synchronizing Host!][Military System initializing.]Vincent found out that in this system he received, he can summon soldiers, tanks, aircrafts, and even warships! This is going to be exhilarating.

The half-elf Sharlayan, who was excluded by his tribe since he was a child, got rid of the restriction of anti-addiction on the day he became an adult, and obtained his own golden finger-the “window” that can communicate with other worlds.

From this moment on, his every move will be under the attention of countless people from other worlds, but because of this, he has obtained a lot of vital information from the bullet screens of those sand sculpture netizens.

About the nature of Azeroth, the future of the high elves and Quel’Thalas, and, as a half-elf, my true origin.

The world is beginning to unravel the veil of mystery, and no matter whether Sarlayan is ready or not, the magnificent wave of the era is just around the corner.

“Children, embark on a journey, witness this vast and mysterious world with your own eyes, and discover the truth hidden behind it.”

“Don’t be ashamed of your half-elf blood, I believe that one day, you will fulfill my and your mother’s expectations, and make the whole of Azeroth proud of you!”

“…Also, who said your mother is human? Have you heard of Dragon Knight?”

――Father, Julian Deep Shadow

- Description from novelbuddy