If I Could Turn Back Time - Inumaki x OC

This is an Inumaki x Oc/kinda self insert slow burn, friends to lovers, tension, plot heavy story. It will follow JJK anime (no manga spoilers) very closely and I tried to be as story accurate as possible. This story has heavy themes of grief, death, and mental illness. There are original characters and villains in a sub plot that will closely be involved with the original story plot.

After the loss of her brother, OC is found by Gojo and taken to Jujustu High. Upon meeting new friends, OC deepens their relationships with their new classmates as well as figuring out her own powers better. While trying to get past her grief, she leans into the quiet boy that always seems to know what to say and do. But she starts to notice she's being targeted by a mysterious observer that keeps showing up. The events of the Sister School Exchange Event and aftermath show there's much more going on. Who is the is mysterious character and what do they want? Why does Inumaki talk like that? How does one explain the JJK power system? What the best way to write a fan-fiction summary?

Would you believe my therapist got me to write this fanfic?