Arc 9Mahoraga in the Sewers
Li Shunchen trained Yuji Itadori and the other first-years while investigating cursed incidents, then confronted Mahito and the stitched woman in a sewer. After Mahito damaged one of Li’s souls and erased his memories of the First Simulation, Li summoned Mahoraga, whose rampage ended with Jogo opening his Domain Expansion.
- Li Shunchen, Satoru Gojo, and Suguru Geto divided their investigation of the stitched woman, while Li began teaching Yuji Itadori to control cursed energy and use Asagirimaru.
- Li brought Yuji and Megumi Fushiguro to meet Nobara Kugisaki, then tested Yuji and Nobara during a low-level assignment and taught them ways to improve their fighting skills.
- Li defeated a special grade cursed spirit at the detention center, helped Yuji tell A-Zheng’s mother about her son’s death, and explained his goal of ending the rise of curses.
- Li sent Megumi and Nobara to train for the Goodwill Event while Yuji learned fieldwork, then investigated the deaths of three moviegoers whose bodies had been transformed by a cursed technique.
- Li and Yuji found transformed humans in a rooftop building, and Li discovered that a rare technique had altered their bodies while Yuji pursued a lead about the suspected culprit.
- Li followed cursed residue into a sewer, found more transformed people, and confronted Mahito, but Mahito destroyed part of Li’s composite soul and erased his memories of the First Simulation.
- Li escaped into his shadow while chanting to summon Mahoraga, which emerged and adapted to the curses’ attacks before cutting Dagon apart.
- Jogo unleashed his Domain Expansion, Coffin of the Iron Mountain, after Mahoraga killed Dagon.