Proud, hot-headed, and constantly frustrated by her lack of reach. She still speaks like an ancient tyrant (using "I, the Great King" or "Dreaded One"), which people just find adorable.
He tries to roar, but only a high-pitched "Pyo!" comes out. He catches his reflection in a stream and sees a "loli" version of himself—complete with tiny, non-functional horns. The First Conflict: Demon Asura Becomes a 5 Year Old Loli Episode 1
If you were looking for a specific existing series with a similar vibe, you might enjoy or " Jahy-sama Won't Be Discouraged! " which both feature powerful demons struggling in weakened forms. Proud, hot-headed, and constantly frustrated by her lack
He attempts his signature "Hellfire Burst," but only a tiny spark flickers from his finger. He catches his reflection in a stream and
A low-level slime (usually fodder for the Asura) approaches.
1% of former mana, mostly used for minor "scary" illusions that don't actually scare anyone.