Many thanks to @etsuko0704 for sharing on twitter.
@etsuko0704 has shared video clips from Japanese news shows on youtube. You can view Keanu Reeves and the other cast members on the red carpet.In one of the clips you see Keanu arriving, you hear him speak Japanese when he is introduced, and you hear him give several interviews on the red carpet. There is also coverage of the other cast members interspersed through the clips.
Clips are here, here, and here.
Update: Many thanks to Mary Kitchen who posted a photo of her interview with Keanu on the red carpet. It is here.
Update X2: UPIThailand has posted a 5 min clip of red carpet activity on youtube.
