The phrase refers to a highly specific, vintage piece of fan-created doujinshi (indie manga) released at Comic Market 72 (Comiket 72) in August 2007 , produced by the circle Naruhodou (or Naruhodo ), featuring the characters Tsunade and Naruto Uzumaki from the Naruto franchise, and later re-released digitally or physically with bonus content ("added work") .
The circle behind this work is (Naruho-dou), also sometimes credited under the author name "なるほど" (Naruhodo). This group has a long history in the Naruto fandom, particularly known for producing fan works with mature content. The circle's name is a clever and layered piece of wordplay that adds another level of meaning to the keyword. The phrase refers to a highly specific, vintage