Invincible Awakening is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

The appearance of the unknown black arch caused the whole world to fall into a huge panic, and the [Lighthouse Base], which was responsible for exploring the world behind the door, was established. He thought he would die, but unexpectedly awakened the Avengers class, which represents wealth and high status. Since then, he has embarked on an unprecedented road to becoming stronger and bid farewell to the mediocre past.