In Jujutsu Kaisen, Satoru Gojo and Megumi Fushiguro share an official teacher/student relationship, as well as a subtle mentor/mentee relationship throughout the manga. It is gradually discovered, particularly after delving into Satoru's terrible background, that they go far back, with a history marred by odd circumstances.
Gojo’s Past and Megumi’s Childhood
Gojo Satoru crossed paths with Toji Fushiguro, ie Megumi’s father during Gojo’s past arc. Gojo and his mates were tasked with protecting the Star Plasma Vessel. Toji was tasked with assassinating the vessel. As Gojo and Toji engaged in a battle, Toji seemingly “killed” Gojo with a blow.
However, unbeknownst to him, Gojo was able to fully awaken and utilize the power of Six Eyes and Limitless at that very moment. Gojo later confronted Toji and killed him. Now Megumi’s father ie Toji had left the Zenin clan and married Tsumiki Fushiguro’s mother when Megumi was in elementary school. Toji had “sold” Megumi to the Zenin clan.
However, after his death, Gojo intervened. He supported Megumi and his sister financially instead of letting the Zenin family take Megumi away on the condition that Megumi would learn Jujutsu sorcery.
What Is Gojo and Megumi’s Relationship?
To say that Gojo is merely Megumi’s mentor would be an understatement. They have a more complicated relationship than that. Gojo is also the guardian figure to Megumi in absence of his parents.
However, Gojo’s personality seems to betray his position of responsibility. Be that as it may, if we look closely, we’ll find Gojo cares deeply for Megumi. He often leaves things up to Megumi to aid his growth and understanding of things and has immense faith in Megumi’s capabilities.
At the same time, he often chimes in with useful advice and is brutally honest in doing so. Megumi doesn’t seem to respect Gojo all that much but he definitely sees Satoru Gojo as a reliable person.
All in all, they have a beautiful and chaotic mentor-mentee plus godfather-godchild relationship, and unraveling its layers is a truly wholesome experience, even if Gojo literally killed Megumi’s biological father.