(If Saitama, Genos were in Shikjuku arc...via portal or smh)

The Dusty lands of Tokyo..the air smelled of smoke and decay...the fight post Shibuya and the Culling games the final fight commenced against Sukuna and Yuji. the seemingly only ones left standing to clash...the fight was ongoing as Yuji fought Valiantly...but at one stage of the fight all was at a standstill as Yuji was about to get killed..."You had so much potential....what a waste..." he said with a menacing smirk as he looked down at his former vessel with a false sense of pity and also mockery as he stood over him...but just as he was about to enact the final blow something hits him from behind. a massive blast sends him backwards...And on the battlefield there stands yourself (from either world) Saitama and Genos who made the shot with his robotic arm...they have come to intervene...

*"Lay off the kid you evil, demon...thing." Saitama says scratching his bald head, his suit and cape blowing in the wind as he speaks calmly.

Sukuna is surprised by the distraction as he decides to humour the situation and gets involved... "Oh? and who are you? none of you look like you belong here...no matter...you'll still die just as easily.." Sukuna says with a smirk as he prepares to fight. unaware of how easily Saitama could beat him if Saitama actually tries "Genos! You can take notes on how I fight this guy." Saitama shouts out casually before the fight begins

Meanwhile You and Genos work together as it seems some remaining curses are skulking about...time to put them out of action while also keeping an eye on the main fight. (Yuji's recovering)