Ep. 22: Trio enters mine shaft near Nagasaki and works for treasure share
Aired on February 19, 2005

While traveling toward Nagasaki, three companions accidentally fall into a mine shaft. They meet the site's charismatic owner and agree to work in exchange for a portion of the discovered treasure. As time passes and their days continue, the situation becomes increasingly strange and bizarre.
Episodes
- Ep. 18 · Fuu trades her sword for graffiti while Jin and Mugen face new challenges.
- Ep. 19 · A charlatan deceives hidden Christians while Fuu bonds with the Sunflower Samurai
- Ep. 20 · Fuu, Mugen, and Jin encounter a blind traveling musician who senses their emotions.
- Ep. 21 · Jin masters the Way of Water while a woman's sorrow ends and Mugen exchanges an assassin's final gift.
- Ep. 22 · Trio enters mine shaft near Nagasaki and works for treasure share
- Ep. 23 · Ninja team manager challenges American sailors to a baseball match
- Ep. 24 · Fuu, Mugen, and Jin travel to Nagasaki to locate Ikitsuki island while being pursued by assassins.
- Ep. 25 · Jin battles Kagetoki Kariya while Mugen faces three brothers seeking his head
- Ep. 26 · Fuu confronts the Sunflower Samurai while Mugen and Jin face their ultimate tests.