Megumi goes to Sugisawa Third High School in search of a high-grade cursed object, Sukuna’s finger.
Meanwhile, Yuuji joins the other members of the occult club in a game of Kokkuri until the student council president comes to inform them that their room is being taken due to a lack of activity reports. The occult club tells the president they’re working on a theory that the rugby field, which had to be closed down due to members falling ill, is being haunted. However, the athletics club advisor put Yuuji on his club members list. In order to officially join the occult club and give it the needed number of members to continue, Yuuji has a shot-put match with the advisor. He wins easily and rushes past Megumi to the hospital to visit his dying grandpa who, in his last moments, tells Yuuji to help people whenever he can.
The day after, Megumi confronts Yuuji after sensing the curse on him, explaining what it is and asking him to hand it over. However, Yuuji had given the finger to the other occult club members.
The club members unseal the finger, and and various curses are drawn into the school. Megumi and Yuuji come to their rescue, and have trouble with a large curse. After hearing that it’s come after the cursed finger to gain more magical power, Yuuji eats the finger himself to combat it. Sukuna tries to overtake him, and they struggle for control. Megumi prepares to exorcise them.