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

What is the Kotoamatsukami technique? How did Shisui use it on Itachi? - Quora

What is the Sharingan? Does Shisui have it? - Quora

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

If the Uchiha's get EMS from trading eyes with someone, how come the whole clan didn't just have eye surgery with each other to get EMS for everyone? - Quora

How long was the cool down time for Shisui before he could use his Kotoamatsukami? - Quora

Why don't Uchiha ever just trade eyes? : r/NarutoFanfiction

Why didn't Itachi take Fugaku's MS to get EMS? - Mt. Myoboku - Quora

Why wasn't Danzo punished for stealing Shisui's eye and other Sharingans? - Quora

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

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

Why didn't Danzo use Izanagi on Shisui's eye when he ran out of eyes on his arm against Sasuke? - Quora

Why did Itachi still use his base Sharingan when he had the MS? - Quora