Movie Plus has posted a 20:09 min video of Keanu’s entire appearance at the John Wick premiere on youtube.
MagiDiGi TV posted a 4:47 min interview with Keanu on the red carpet on youtube.
TV Groove posted a 5:39 min clip on youtube of Keanu at the premiere. It is an extract from the Movie Plus clip above.
There is a photo of Toshiyuki Morikawa with Keanu on the Toshiyuki Morikawa Official Blog. He did the voice overs for Keanu on John Wick (via Ayako.
Epa has the series of photos from the premiere that were taken by Kimimasa Mayama. Several have appeared in press articles on the premiere while others have not.
Update: TV Groove has posted an article with 6 photos.
Many thanks to @Tomo8910J who attended the event and shared photos on twitter here, here, here and here.