Flint: The Time Detective S01 E04 Talen

The team is sent back to the Heian Period of Japan (794 A.D.) in search of the Time Shifter Talen. After confronting the villains, Petra Fina and Flint are dragged into the tale of Princess Kaguya as Talen attempts to escape. Within the story, Flint befriends Talen (who disguises herself as the titular Princess Kaguya) and all three eventually escape the story. Petra Fina subsequently captures Talen and Flint must fight to rescue his new friend.