Uchi No Otouto Maji De Dekainn

Japanese uploaders on Nico Nico Douga (Japan’s YouTube) began looping the audio clip over absurd videos. The most famous edit showed the character staring at a giant Gundam robot, then a colossal bowl of ramen, repeating the line. The deadpan delivery made it a "listening endurance" meme.

The gender flip also became popular. Female fans began using the phrase to describe their favorite "big brother" anime characters (like Levi or Gojo), ironically calling them otouto . uchi no otouto maji de dekainn