After Graduating from High School, I Contracted a Nine-Tailed Fox Demon

Lin Xuan traveled to an extraordinary world where demons were raging and everyone was a spiritual master. Only by becoming a top spiritual master could he protect himself! As graduation approaches, his contracted spirit animal only has an ordinary little white fox. Fortunately, it is bound to the god-level advancement system. Even a weak black wind mantis can advance to the Queen of Blades and transform into a death reaper! "Congratulations to the host, your contracted spirit beast, the ordinary snow fox, has reached the advanced conditions!" "Advanced successfully!" "First advancement, reward the ultimate form of the nine-tailed fox demon!" … Many years later, when mankind was facing destruction, Lin Xuan summoned his own legion of mythical beasts, the Nine-tailed Fox Demon, the Queen of Blades, the Nine Nether Dragon Girl, the Dark Demon Phoenix, the Nightmare Angel... The whole world trembles! Ps: The introduction is weak, please read the text for details! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.