It's been announced that ONE OK ROCK's Taka will be participating in the lead track off of Shimizu Shota's ninth album "HOPE" that's scheduled for release on July 21.
The album's lead track is titled "Curtain Call feat. Taka." The two had been friends from before, so Taka gave ready consent when he received the offer from Shimizu. You can listen to a clip of "Curtain Call feat. Taka" in the album's teaser below.