Air date: November 30, 2004
Recently, Tsuna has been acting strange behind Hikaru's back. One day he puts on a nice suits, which he never does, and surprises both Hikaru and Sadamitsu. Hikaru is suspicious while Sadamitsu no doubt believes that there must be a woman. Hikaru decides to tail Tsuna, but when she notices his unusually serious behavior, she takes a firm decision about something.

Script: Midori Goto
Storyboard: Atsushi Wakabayashi
Director: Yumi Kamakura
Animation Director: Takahiro Chiba