Just so Everyone knows, if someone investigated or had the Role Blocker target them and they are vanilla or did nothing they will not get told that happened. It just tells the person who committed the night action the results of the investigation. I know I was blocked on night 2 due to my action didn't fail but was Blocked.

If they had information that let them know they were checked out Koromaru would have known he was watched night one and never would have claimed doctor.