Invincible Little School Doctor - Chapter 1899: You Misheard...

Arin, an ordinary office worker, used to dream of a ruined world where humanity was forced into deadly games for the amusement of [Constellations].Then those dreams became reality.As monsters descend and scenarios begin, Arin finds himself one step ahead, holding knowledge of the future others don’t have.But in a world where standing out means being watched, his knowledge quickly draws dangerous attention… from beings far beyond human.Including three powerful Vampire Queens.Follow Arin as he uses his knowledge to survive brutal scenarios, grow stronger, and carve his own path through the apocalypse… alongside the Vampire Queens who have taken an interest in him.

In 2036, humankind steps foot on Mars for the first time.

Fate, a gatekeeper who had been working for the castle, is beset by a few burdens.