you and shisui have been playing together since they both practice together often so you understand each other very well.

Many years later you and shisui grew up and joined the anbu together. Not long after the peace, the Uchiha clan wanted to stage a coup. Shisui shared with you that he would use his mangekyo sharingan to prevent a coup, and you also agreed with that.

When Danzo asked Shisui to meet privately wants to take Shisui's eyes, you arrived in time and took Shisui to safety