Back to the Baby.
As B-Pro is takes a break after practicing to Kodou Ambitious, Ryuji is confronted by a stalking papparazzi who shows him a scandal page about his father. This causes Ryuji to lash out by running away from him, resulting him falling down the stairs and hitting his head, rendering him unconscious. Unbeknownst to them, Yuta and Tomohisa were listening. When Ryuji wakes up he has amnesia - only remembering his life when he was seven years old...