Isn't It Reasonable for an Eight-Year-Old Like Me to Slay a Dragon with One Sword?

At some unremarkable moment, the wheels of civilization veered off course.

Technology and magic thundered across the world; gods and dragons watched from above; the present and the past overlapped before our eyes. The world had become a creation forged from the fusion of past and future, with an inverted tower of reason lurking beneath its dazzling neon glow.

When divine blood burns at midnight, when dragons twist and soar beneath the moon, when forbidden powers return to the world... the bells that had been silent for ten thousand years rang once more. If ancient civilizations rose again from buried histories, what path would humanity take?

The gods of old are gone. In this glorious yet desperate age of humanity, we have only two choices:

Draw our swords, or die.

(No harem, no female lead)