Prism Ark Episode 10 English Subbed Episode Title:The Heart of Knights.Episode Description:The annual school festival is coming up, and everyone is looking forward to the PNP (Prism Night Party) where an event called the PPP (Prism Prince & Princess) is the main highlight. Priecia, who has challenged Hyaweh to a duel, is convinced to participate in an acting competition, thanks to Fel and the Headmaster.