S1E04 Captive Butterfly!

Captive Butterfly! (因われのバタフライ！ Toraware no Batafurai!) is the fourth episode of the Free! anime series, which aired on July 24, 2013.

Synopsis
This club is equipped with safe swimming equipment, but as soon as they start their very first practice, problems occur. "I'm sure that the swimsuit is the problem! We're going swimsuit shopping!".

Characters
List of characters in order of appearance:

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Gefangener Schmetterling! Zniewolony_motyl!