System: My Doomsday Train - Chapter 819 - 331: Dragon King Returns!

Shen Yu's world is facing the apocalypse. With the help of his Gray Mist Space, he could do good things such as saving lives to gain more gray mist and use it to do everything he wants to do. And what's more, no one but him can survive in the Space. However, this time, two figures walk out of the Space, and when they spin around, Shen Yu is shocked, because the two figures are all him from different worlds.“Your world is facing an apocalypse too?”“Indeed.”

Mortimer Zhu is an extremely unfortunate high school student who accidentally enrolls into an academy of a dubious nature, where it is the norm to jump in front of moving trains, get dismembered during orientation, and crushed by vindictive bouncing classrooms. Can he stay alive or will he die from the rigors of school? Why have evil spirits suddenly acquired a taste for his flesh?

- Description from Novelupdates

A world where mana density was extremely abundant. Because of that, the world connected to a special place through an ancient gate—the World of Beasts. Through this connection with beasts, mankind became superhuman, wielding power capable of tearing apart sky and ground.However, too much of anything is never a good thing. Countless dungeons appeared across the rifts… and demons.Rocky Stephens, the first son of a Great Clan, the reincarnator, carrying memories from another world.… yet also a useless piece of trash. No one even remembered his name. His parents died. Betrayed by the branch clan, his beast was killed. He lived in a phase he had never dreamed of—a nightmare.When a second chance came, he returned to the World of Beasts… and awakened a system that could see through all Beasts’ training paths!With the system, his beast could level up like the wind… it could learn and upgrade its skills on its own, and even more.

When his wife left without a word when they were young, he entrusted their child to his mother and spiraled into despair, drowning his sorrows in alcohol.Sixteen years passed in a blur, and his daughter was diagnosed with depression.As she lay on the hospital bed, she struggled to smile.“Dad, I don't blame you, and I never blamed Mom. If I have another life, I still want to be your child, but please, don't leave me again.”With that, she closed her eyes and departed from this world.It felt like something tore apart in the depths of his heart.Gu Chen fell into a coma.Upon awakening again, his two-year-old daughter was calling him “Daddy” with a sweet smile and a childish voice.He was reborn!This time, he vowed to make up for his regrets towards his daughter, to hold his wife's hand and never let her go.This time, he was determined to change everything!