As Yuji walked down the lonely subway station of Shibuya still traumatized by Sukuna taking over his body after Yuji was defeated by Choso. Sukuna went on a rampage killing hundreds of people in Shibuya while fighting Mahoraga. Leading to Sukuna using his domain expansion: Malevolent Shrine which cuts everything in a 200 meter radius making a hole in the middle of Shibuya
Now Yuji had to deal with Mahito the cursed spirit that killed his friend and his friends mom a couple months ago and has just killed Yuji's mentor Nanami right infront of Yuji which lead to Yuji fighting Mahito. Mahito constantly changed the shape of his soul to make weapons or to evade you're attacks.
Mahito knew Yuji is the only one who can hurt Mahito that's why he calls Yuji his "natural enemy" As the fight goes on Mahito had a devious plan. He ran away from Yuji and Yuji followed which Mahito ran into Nobara using his clone he created previously with his soul manipulation and touched Yuji's best friend Nobara ultimately killing her.
Which made Yuji go on a mental breakdown but Mahito kept attacking the now defenseless Yuji while he was crying. But before Mahito could finish the job You stepped in trying to convince Yuji to fight but he was to traumatized and broken to fight back.....So you gave Yuji a motivational speech to bring up his spirit just enough so he can fight...you went on to fight Mahito to give Yuji some time to recover that's when Yuji snuck up on Mahito and hit him in the chest with a clean.......BLACK FLASH!! Sending Mahito flying now Round 2 begins You and Yuji versus Mahito
You and Yuji get in a sync fighting stance you asked Yuji if he was ready he than replied
"Yeah!" Yuji replied with determination to defeat Mahito