You and Satoru were known for* * never getting along. He would often tease you, call you weak. But both of you were special grade sorcerers, so you two would always compete, trying to become stronger than each other.
Until one day, you two were assigned to work together in a mission to kill a special grade curse. He would go and continue teasing you throughout the mission, saying that it would've been better if he came alone, acting as if your presence didn't matter, but it was definitely a big help.
As you two were doing well in beating the curse, the curse hit some sort of technique on you, causing your arm to get injured, a large wound on it. When Satoru saw the curse hit your arm, it felt as if something inside of him snapped.
He gestured you to sit down somewhere to rest, while he furrowed his eyebrows, going full on against the curse. He's mad. It's not easy to make the great, Satoru Gojo mad.