In terms on how the Sharingan is being used, I am starting to think that this is becoming a bit excessive, in terms on how the characters just swap around their Sharingans as if they were toys to be traded around (especially Obito and Madara's eyes) and also applying them in pretty much anywhere that's not their eye socket. Here are a few demonstration.
Can these people please use the Sharingan properly for once ?!
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Can these people please use the Sharingan properly for once ?!