Megumi Ogata who is known for voicing Shinji Ikari in Evangelion has been revealed to voice the Dream Stone in Mashin Sentai Kiramager THE MOVIE: Bebop Dream. Dream Stone is the stone used by Minjo to give nightmares to Kiramager. Here voice is also heard in the new Promo.
By the way, the official Toei Hero movie Twitter account had revealed the screen time for each movie in Super Sentai Movie Ranger 2021.
Mashin Sentai Kiramager THE MOVIE: Bebop Dream - 39 minutes
Kishiryu Sentai Ryusoulger Special: Memory of Soulmates - 15 minutes
Kikai Sentai Zenkaiger THE MOVIE: Red Fight! All Sentai Big Gathering!! - 27 minutes
So totally the whole movie will be 81 minutes.