Under the Starry Sky is the 36th episode of Cardfight!! Vanguard: Season 3 in the Cardfight!! Vanguard Anime.
Plot
The school camping trip continues when Aichi and the others noticed that Kourin is acting a little different from her usual self. At night, Kourin and Aichi was walking through the woods not knowing that Kourin has been reversed. Kourin and Aichi fought each other but Kourin had both feelings for Aichi and the will of the reverse, she got concious and she was also concious of Aichi innocently fight her so she stopped the fight and ran away.
Video
Episode 140 Cardfight!! Vanguard Official Animation
Cardfight!! Vanguard Episode 140 English Subbed HQ