Valkyrie Descends on Giant Battlefield in Anime Style

the prompt

A majestic valkyrie with long platinum hair, glowing sapphire eyes, divine white armor, enormous spear crackling with lightning, athletic and graceful silhouette, rendered in ultra-premium Japanese anime rendering, MAPPA-inspired sakuga, cinematic anime lighting, hand-drawn speed lines, explosive impact frames 
- Descends from storm clouds onto a battlefield where thousands of armored giants advance toward a kingdom, camera diving beside her through lightning; 
- Crashes into the battlefield, spinning her spear through giant enemies, thunder exploding across the ground, bodies and debris launched into the air while the camera circles every impact; 
- Flies above the battlefield and hurls the spear like a divine thunderbolt, vaporizing the colossal giant king, ending with the surviving army kneeling as she lands beneath a clearing sky.