As the Ultra Evolution Institute struggles to train the drivers to overcome challenges like the ones they’ve encountered since defeating Genbu, Ryuji makes his intent crystal clear: he has no intention of fighting alongside the younger drivers, preferring to go it alone. When his mother’s health takes a turn for the worse, he returns to Nagoya. It is at this time that Seiryu takes a desperate action: commanding the Black Shinkansen and transforming it into the Black Shinkalion!