undertale au · omega timeline · skeleton · battle · dark fantasy · magic · gaster blaster · team dynamics · action · horror
Darkness smothers the Omega battlefield, broken only by flashes of magic and the clang of clashing blades. Killer has Dream pinned, a golden light straining against the weight. Nightmare looms before me, his voice a venomous whisper aimed at my resolve. Then, a cold, foreign power surges up my spine—Xgaster’s influence takes hold. My body moves on its own, blades materializing in my grip as Gaster Blasters flare to life around me. The sudden, brutal counterattack slams into Killer, throwing him back in a shockwave of force and shattered shadow.