Jujutsu Kaisen Season 2, Episode 6, “It’s Like That,” is beginning of the Shibuya Incident Arc that starts off slowly. Yuji, Megumi, and Nobara consider going shopping or going to a movie. A girl from Yuji’s past, Yuko Ozawa, as Nobara if Yuji is taken. She went to Middle School with him. Yuji and Megumi reunite with Nobara and he greets Yuko pleasantly. However, she becomes intimidated and leaves without asking for his number. Later they meet with Utahime Lori, she knows who the mole is.
Last season during the Kyoto Goodwill Event Arc, Gojo tasked Utahime with uncovering the mole inside of Jujutsu High. They head to a warehouse that suppose to house the real body of Kokichi Muta but was empty. This fact confirms that Muta aka Mechamaru is the mole. Elsewhere, Muta is actually meeting with Mahito and Geto. They made a “binding vow,” to have Mahito fix his body in exchange for information. Mahito is eager to kill him but is warned of the consequences of breaking a vow with others. Mahito begrudging makes good on his vow and restores Muta’s body.
The two quickly begin to fight. Muta sends several Mechamaru puppets to attack Mahito who easily destroys them. Muta disappears and emerges underneath Geto and Mahito in a mecha. The mech is fueled by seventeen years of cursed energy. Muta is prepared to die, especially considering that he’s up against Geta and Mahito. He hopes to contact Satoru Gojo for aid. Muta starts the battle with his Ultra Cannon shot.