S1·E5 A Tumultuous Argument

While Light rests after collapsing, Lena and Ayla are called to the adventurer's guild to report to the guild's authorities on the incident with the Wicked Dragon. They attempt to get information on "Black Swan" and Dratena, but the Holy Sister cleverly dodges their questions, so Lena offers the Wicked Dragon's scale in exchange for access to records concerning Dratena.