The Worlds Are Merging? I Became the Great Demon King

Have you ever received a text message from another version of yourself?

On the eve of the apocalypse, Zhou Cheng from a parallel world sent a message: 'Your world will be destroyed in three days. Countless dimensions will merge, countless civilizations will invade, and your world will be in grave danger...'

Faced with a warning from himself in what was supposedly a player world, Zhou Cheng said he wasn't worried... and he meant it!

I have a Player System, a Dimensional Cube, and the Hand of God...

Any dimensional civilization that falls into my hands will belong to me...

What?

The Demon Slayer Corps? A city under siege by zombies? An invasion of dark magic? Strange creatures?...

Ding! Flame Breathing mastered: Dance of the Fire God!

Ding! Dark magic mastered: Avada Kedavra!

Ding! Spatial laws analyzed: Mirrorworld Collapse!

Ding! The Great Path of Time comprehended: Time Rewind...

As a walking bug-sleuth in the mortal world, what does it matter if the world is filled with countless wonders and horrors?

Even beings as powerful as gods had no choice but to kneel before Zhou Cheng and cry, 'Spare me, Demon King!'