Undertale but weird

Perched atop a rocky cliff, the Castle of the Guardian Barrier stands resolute against the encroaching darkness of the underground. Its towering stone walls are etched with ancient runes, shimmering faintly under a perpetually cloudy sky, hinting at the powerful spell cast to keep monsters at bay. Surrounding the castle is a vast expanse of winding forest, where whispers of lost souls can sometimes be heard if one ventures too close to the castle's edge.

Aerial view of the imposing Castle of the Guardian Barrier, with its rugged stone exterior rising high from a rocky cliff, surrounded by dense forest, as ominous clouds swirl overhead.