Ok after Sukuna kills Gojo. They get a cursed object like the one contained Gojo but this​​ one is different. It stops Sukuna from gaining any power mental or physical and traps him only for 1 yr(You can decide the best time period)

Then the gang starts to train(As Yujis power is related to soul, so somehow he is able to hear some instructions from Gojo.Turns out as Gojo chose left path instead of being satisfied a part of his soul remained and helped Yuji and the gang, tho only Yuji can hear him)and others take care of the culling game mess. After all of it is done (It is not a time skip and actually shows the gang training and the mess getting cleaned). It's time for Sukuna ​​​​​to get released.

(Remember they trained for 1yr and are much stronger) It is unexpected for Sukuna,Yuji and Higuruma rushes in like manga and sukuna finally wins, then they change to plan B, Maki suddenly gets teleported with Yuji. The plan is to weaken Sukuna and soon Yuta joins in. They fight Sukuna to exhaust him physically and his cursed energy. They put a good fight but are not a match for Sukuna. Sukuna gets exhausted slowly.Then they get teleported and now it's our bowsky Todo and ​Yuji. Yuji is hitting Sukuna with his black flash and the constant switching is making Sukuna to unable to hit Yuji. Yuji starts to use cleave and other powers as he is much more trained now, he cooks. Then Sukuna suddenly feels that Yujis punches are getting stronger.

He is desperate to ​​​win so he focuses on Todo first. He obviously gets him as he learned all the patterns while fighting. Yuji is now alone. But everytime yuji hits he is getting stronger. Suddenly yuji says "Domain Expansion". Sukuna now can only see 10000 demon hands of Yuji. Turns out yujis domain is confirmed kill. But to get that he needs high amount of cursed energy and the enemies soul should be weakened. Everytime Yuji hits he gets to steal a bit of cursed energy and as his punches impact the soul, Sukuna gets weakened. Finally ​​after the domain expansion, Sukuna is covered in blood and says You have became strong. This shows that he now has acknowledged Yuji and now also acknowledge the ideologies of Yuji.

[The fights would be much more intense and entertaining but I can't describe the whole fight here so I just said the basic of the fight.]

If you liked it or hated it, let me know 🙂