Kingdom Hearts 2.5 ReMIX - Sephiroth Secret Boss (Critical Mode) 

Sephiroth secret boss fight in Kingdom Hearts 2 played on Critical Mode.
It would have been a disservice to not include the cut scene of the Cloud & Sephiroth battle at the end so I happily added that too :)
Timestamps below:
00:00 Sephiroth Battle
04:19 Passing on Sephiroths request to Cloud
04:45 Cloud & Sephiroth battle
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Thank you for watching as always!
Game: Kingdom Hearts HD 2.5 ReMIX
Platform: PC