I Possessed a Demon Sovereign - Chapter 580 - : Coming to the Door

What was originally an ordinary day, suddenly became a historical turning point. Enormous, mysterious Cubes appeared all over the world without warning and as if Judgement Day’s spears, inserted themselves into the blue planet.

From inside the enormous Cubes, endless streams of monsters gushed out alike raging tides, utterly defeating the unguarded armies of each state in the blink of an eye.

In order for humanity to preserve its final embers, the heads of states issued orders of retreat, to no longer attack the Cubes but rather to cling to remote cities, which they turned into self-sufficient survivor bases and around which they built 100-meter-tall Walls of Life!

Many years later, while bearing the heavy weight of history, the first expeditionary force brought back a world changing piece of information. The Cubes possessed exceedingly high intelligence and they regularly transmitted mission instructions to humans nearby. The mission rewards were incredible.

Since then, humans rushed out of the confines of the walls and once more set foot on the wasteland!

- Description from Novelupdates

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

Five years ago, she was schemed to have one-night stand with a stranger, resulting in a mysterious pregnancy.Meanwhile, at her engagement party, she was humiliated by her fiancé, abandoned by her family, becoming the most notorious woman in the city.He is the powerful and enigmatic heir to a conglomerate who unexpectedly enters her life.From then on, her stepmother is utterly defeated, her ex-fiancé begs for forgiveness, and her stepsister pleads for mercy repeatedly.He, ruthless as ever, declares domineeringly, “She's mine. Who dares to impose on her?” Everyone is stunned and shocked.Her life undergoes a drastic change.