Aria The Natural Episode 13 English Subbed Episode Title:Those Really Self-Imposed Rules ...Episode Description:Alice tells Aika and Akari that she's having bad luck that day because she failed yesterday's personal challenge, which Akari calls childish and cute. The next day she sets the challenge of walking home from school stepping only on shadows, and she almost makes it before failing. Athena happens to see this from her gondola and sings a song that distracts Alice. The following day, Alice attempts the same challenge, and this time meets Athena on the way...