Mocked for Being the Lowest-Rank Support?But His True Damage Cheat Sys Deals 99999 Damage in One Hit

What the story is about

After reincarnating into a world threatened by abyssal rifts, Lu Chong awakens what appears to be a worthless support class—but it conceals a god-tier power that turns spirit crystals into overwhelming strength and true-damage skills. As he rises through trials and uncovers schemes against his family and city, he uses his rapidly growing power to confront both human enemies and abyssal threats.