Imanouchi (イマノウチ), or Imanouchi Ranta (今之内乱太), is a shy AA character that would appear in a seemingly inactive thread on the rarely used 2channel boards and start dancing. His earliest known appearance is September 14, 2001,¹⁾ but the formula was established by then.

He is a quiet character who speaks in half-width katakana, roughly saying “nobody's here… now's my time to shine” (誰もいない…宣伝するなら今の内) before he starts doing this 'ranta-ranta-ranta-tan' dance. When found, the expected response became “I saw” (みたよ, mitayo) with the Jisaku Jien emote. His behavior would later inspire similar copycat behavior through Nurupo, Saitama, Mossari, Aramaki Scarchinov, etc.

• For some reason, the older translation uses all caps, which sorta goes against his quiet nature, and his catchphrase was gutted to say “I can dance now”, which kinda just makes it sound stupid.
• In his catchphrase, he uses the term 'senden' (宣伝), roughly meaning 'spread the word', but dictionaries will translate this as 'advertise', 'disseminate', 'promote', or 'propagate'.

• Mou konee yo! - A similar earless character.

• Imanouchi on the 2ch AA Illustration Project