Demon Summoning Program: The Age of Demons Begins Now

"Congratulations! Your demon has evolved into an Archangel."

"Congratulations! Your demon has evolved into a Power."

"Congratulations! Your demon has evolved into a Virtue."

"Congratulations! Through fusion? + ? + ? + ? successfully produced the Archangel Merkabah."

"Congratulations! Through fusion? + ? + ? + ? successfully produced the Archangel Metatron."

"Congratulations! Through fusion? + ? + ? + ? successfully produced Holy Lucifer."

After being transmigrated into a dark age where demons had descended and gods, demons, immortals, monsters, spirits, ghosts, and all other beings were called demons,

humanity's numbers dwindled, and people could only hide in underground refuge cities, with despair following everyone.

To survive, humanity invented a demon-summoning System.

When they turned eighteen, everyone had one chance to change their fate: become a demon summoner.

The demons used by demon summoners were called demons.

Use...

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.