Naruto: Shisui's Mangekyou Sharingan explained - Dexerto

Naruto - Dexerto

Naruto Theory Predicts the Power of Its New Mangekyo Sharingan

Why is it that Shisui and Madara are only shown to use one Mangekyo Sharingan ability? - Quora

How Shisui Unlocked Mangekyou Sharingan Explained!

How did Shisui figure out what his Mangekyou ability was if it can only be used once every 10 years? - Quora

Why is it that Shisui and Madara are only shown to use one Mangekyo Sharingan ability? - Quora

How Shisui Unlocked Mangekyou Sharingan Explained!

Kotoamatsukami, Narutopedia

What Mangekyo ability is the most OP? - Quora

How does an Uchiha know what abilities his Mangekyo Sharingan eyes have? Does he just feel the power? For example, how did one discover Amaterasu or Shisui his Kotoamatsukami? These are powers