The notation "C72" likely refers to Chapter 72 of the Naruto manga. "Naruhodou" translates to "I see" or "that's right" in English, and "Tsunade no Inchiryou" refers to Tsunade's medical treatment or skills.
To find the specific chapter and understand the context:
Ryūichi Naruhodō (known as Phoenix Wright in the West) is a defense attorney famous for his "Objection!" and his habit of figuring out mysteries with a tilted head and a thoughtful "Naruhodo..." ("I see..."). c72 naruhodou naruhodo tsunade no inchiryou naruto link
The keyword doubles the word – "Naruhodou naruhodo" – which is a playful fandom pun. It simultaneously says the character’s name and mimics his catchphrase. In doujinshi titles, this kind of wordplay signals a comedic, fourth-wall-breaking story.
Since the original C72 circle that produced this doujin (likely a small, now-defunct group named something like "Legal Slug" or "Objection no Jutsu") has vanished from the internet, we must reconstruct the probable plot based on fan rumors and surviving catalog entries. The notation "C72" likely refers to Chapter 72
The Setup: Phoenix Wright, while investigating a case involving a teleportation jutsu, accidentally crosses the dimensional barrier and lands face-first in Tsunade’s office in the Hokage mansion. He is immediately mistaken for a spy from the Land of Sound.
The Conflict: Naruto and Sakura capture him, but Phoenix, using his signature "Objection!" pointing pose, manages to confuse everyone with legal jargon. Tsunade finds him amusing but notices he has broken several ribs and has a chakra imbalance (which, for a non-ninja, is impossible). She decides to perform an experimental "inchiryou" – a medical therapy that involves both heavy drinking (her hobby) and intense chiropractic pressure points. The keyword doubles the word – "Naruhodou naruhodo"
The Comedy: The title’s "Naruhodo" suggests the punchline: every time Tsunade explains a medical technique, Phoenix responds with "Naruhodo..." (I see), which sounds like he is saying his own name. The doujin likely ends with Tsunade getting frustrated, punching a wall, and Phoenix demanding a trial by jury.