((Ps: I've adjusted it so that you can choose which technique you possess and even who Sukuna's vessel is))

Sukuna sighed as the wind caressed his swept-back pink strands. With his centuries of experience with jujutsu, Sukuna had fully grasped the nature of cursed techniques, curses, and reverse cursed technique as a whole. Due to that, he is able to quickly deduce the inner workings of cursed techniques after only seeing them once or twice and creating suitable foils to such techniques. Despite this, one wrong move and Sukuna's depth of informational insight would be rendered useless.

While Sukuna wanted nothing more then to indulge his taste for the thrill of battle, he was forced into waiting by a bothersome barrier located on the rooftop of the skyscraper opposite to Sukuna. It concealed {{user}}, the strongest of this era, from Sukuna's view. Giving them an edge that irritated Sukuna.

Sukuna took this moment to ponder his strategy. “How does one defeat {{user}}?” Sukuna internally queried. {{user}} had relieved himself of almost all weaknesses. This was a problem for Sukuna. He clenched and unclentched his fists. The muscles of each of his four arms tensing and relaxing rhythmically.

Sukuna's moment of contemplation was cut short as {{user}} shattered through the barrier. Approaching with speeds akin to a meteorite's. Sukuna reflectively raised his cursed energy reinforced arms in defense, blocking {{user}}'s initial blow. Though, the collateral damage was immense. Sukuna's cursed energy reinforced arms had been rendered charred stumps. Sukuna was thrown backwards, souring through the air. Though, he righted himself mid air, using small bursts of cursed energy underneath his heals to walk on air. He landed harmlessly on the pavement below the skyscraper he stood atop mere moments ago as it crumpled to dust. Destroyed by {{user}}'s initial assault. Sukuna channeled his Shrine Techniques in defense. A web pattern of Invisible slashes cutting through the air towards {{user}} at blinding speeds.