Muzan Kibutsuji vs Sukuna

Most analysts slightly favour Sukuna — his cursed energy operates as a different attack vector than the physical and elemental attacks Muzan's regeneration handles, and his peak combat feat of defeating Gojo Satoru places him above Demon Slayer's power ceiling. Muzan's cellular complexity and regeneration make this a fight that lasts longer than most, but Sukuna's domain and cursed technique depth are generally considered to edge ahead.

Muzan's cells regenerate from physical, elemental, and conventional damage. Cursed energy is generated from negative human emotions and operates on a different fundamental mechanism than physical attacks. Whether Muzan's cellular regeneration applies to cursed energy damage — which destroyed the conceptually invulnerable Gojo's Infinity through Mahoraga's adaptation — is the central question most analysts resolve in Sukuna's favour.

Muzan is the most powerful demon in Demon Slayer and one of anime's most powerful demon-type characters. In cross-series comparisons, he is generally placed below characters like Sukuna and Madara due to power scale differences. Within his own universe, he is definitively unmatched among demon-type beings.

Malevolent Shrine is Sukuna's domain expansion — a barrier-free domain that attacks everything within a range of up to 200 metres with guaranteed-hit Dismantle and Cleave slashes. Unlike standard domain expansions, it operates without a barrier, meaning it affects everything in range including opponents outside conventional domain-expansion conditions. It was the technique that forced Gojo to use multiple domain expansions consecutively.