Magic Chronicles : Fallen Race

Have you ever pondered the mechanisms behind the Demon King's power system? Wondered how they attain such formidable strength at the game's outset, or why they seem to advance in levels more swiftly and efficiently than the heroes? Look no further, for this narrative delves into those very mysteries.
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"Magic Chronicles" is a game that retells the story of a war between humans and demons.

To his annoyance, Reji is given credit for the last accomplishment after finishing successfully.
The reason for his annoyance was because of the title of the achievement...[Unforgivable]

Was it because he stole a passerby's vehicle and quickly got there?

Or that he broke into other people's houses so as to break unlocked treasure boxes?

Or that he infiltrated the cult in order to "borrow" their precious relic?

"Without my careful endeavors as the savior, how would your world stand upon the invasion of the demonic race from beyond? What will you employ to cast out and seal the desolate chasms of disorder the demons summoned and are now threatening your realm?"

[Beep. It has been detected, the summoning ritual of the Demon King. Soon thou as well shall be chosen and descend into that chaotic rift]

Reji: ".?"
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every 500+ power stones = 1+ chapter
every 50+ golden ticket = 1+ chapter
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To know exactly what you are about to read:
1. The plot is similar to Overlord, but only at the start.
2. Mc's personality is kind of similar to Cid's from The Eminence in Shadow, but a strategy one.