The Rin Stripper Dance meme originates from the ending credit sequence of the anime series Free! Eternal Summer, specifically the song 'Future Fish.' In the sequence, the character Rin Matsuoka is depicted performing a highly stylized, flamboyant dance in a desert setting reminiscent of a Las Vegas show. Due to the unexpected and suggestive nature of the choreography compared to the show's sports-drama themes, fans quickly turned the clip into a viral sensation. The meme typically involves rotoscoping other characters into Rin's place or adding captions that highlight dramatic, over-the-top reveals or 'main character energy.' It remains a staple in the anime community for its high-energy visuals and comedic potential.