After guarding the Abyss for a billion years, I have returned!

"My name is Meng Zhan. I transmigrated to a world with extremely high martial strength and became the eldest son of the Meng family, a long-lived family. I was extremely talented, had a perfect background, and was extremely handsome. I became the strongest divine son of the human race of my generation.

However, when he reached adulthood, the system activated and issued a mission for him to guard the Abyss for a billion years.

As a prodigy of the human race, he had no qualms about this matter.

Therefore, Meng Zhan joined the Demon Suppression Army and stayed at the entrance of the Abyss. Day after day, his Demon Suppression Army brothers fought bloody battles for the sake of the human race. One billion years later, Meng Zhan guarded the Abyss for a billion years. He was the only one left in the Demon Suppression Army.

After completing the system mission, Meng Zhan excitedly condensed a Taoist Body and left. When he returned to his home, he saw a scene that made him collapse. Meng Zhan shed tears of blood.

"I, Meng Zhan, have guarded the Abyss for a billion years and protected the human race for a billion years! In the end, my Meng Clan has become a criminal clan!？The entire clan was raped, and hundreds of millions of clansmen…