Why didn't Itachi use Shisui Uchiha eyes to gain EMS? - Quora

Why doesn't any Uchiha other than Itachi ever use Izanagi or Izanami on his opponents when it's such an OP ability? - Quora

Why didn't Sasuke's MS pattern change to Itachi's once he had his eyes transplanted? - Quora

How strong would Itachi be if he had one or more Rinnegan? - Quora

In Naruto, why did Itachi only care about Sasuke's survival (physical existence), but not about Sasuke's mental and emotional well-being (quality of life)? Was Itachi really that out of it? - Quora

Why can't Uchiha just trade an MS with each other to obtain an EMS? - Quora

Why didn't Itachi implant Shisui's eye into his own? - Quora

Why didn't Itachi Uchiha implanted the one Sharingan Shisui Uchiha gave him into himself to unlock EMS in at least one of his eyes? This would have prevented his sickness albeit temporarily

If Danzo stole Shisui's eye that had Kotoamatsukami, why does Itachi implant Shisui's other eye with supposedly the same ability into the crow? Is this a plot hole or does Shisui just

Why didn't Sasuke use his Eternal Mangekyo Sharingan (EMS) during his fight with Danzo, when it was clear that he could have beaten him easily? - Quora

Why didn't Itachi get an EMS from shisui's MS? : r/Naruto

Can Naruto still use Itachi's crow, the one that has Shisui's eye? - Quora

Why didn't Itachi Uchiha implanted the one Sharingan Shisui Uchiha gave him into himself to unlock EMS in at least one of his eyes? This would have prevented his sickness albeit temporarily