Ep. 8: Eichi completes the dam mural and entrusts the remainder to Tone before departing.
Aired on May 26, 2004

Eichi finishes painting the mural on the dam's wall. After completing this task, he informs Tone that the remaining work will be left in their care. He then departs, leaving the rest of the project to them. This marks the conclusion of his involvement with the mural, as he hands over responsibility for the unfinished portions to Tone and the others before leaving the location.
Episodes
- Ep. 4 · Bocca discovers the robot creature he fought belongs to the Monster Union organization.
- Ep. 5 · Bocca persists in attacking the Monster Union robot despite White Night Cape issues
- Ep. 6 · Bocca and Sayako discover Pyramid Scheme Valley and a mural while following Kurofune
- Ep. 7 · Bocca discovers Tone's identity and her surprising connection to Melos techniques
- Ep. 8 · Eichi completes the dam mural and entrusts the remainder to Tone before departing.
- Ep. 9 · Bocca and Sayoko reach an industrial zone where Sayoko meets Coco
- Ep. 10 · Bocca reunites with Tsunagi who explains the Space Fort Mitranome and Engine One
- Ep. 11 · Bocca and Team Rescue Sayoko Who Warns of Remaining People in Engine One
- Ep. 12 · Bocca and Sayoko discover the Jaguar of the Sun machine while searching for Kurofune.