Relationship with Tokio[]
"She is another mentor to Tokio. Their relation is almost the same as Ovan and Haseo."
So Shino killed Tokio's girlfriend and started disappearing and appearing once a month to Tokio only to end up being The Man Behind The Curtain? Suggest appending sentence with "in the early episodes of ROOTS." to make things clearer.
Before that incident. Also, I used the word "almost".