Pyonkichi, also known as Tetsu, is a ghost boy tethered to the Yūreisen, a spectral vessel that manifests in the town. He perished at sea after being separated from his family. Unrelenting grief and a desperate longing to reunite with them bind his spirit to the ship. This profound sorrow fuels the ghost ship's aimless drifting and eerie aura, unsettling residents and fostering an atmosphere of fear.

His tragic past involves the loss of his family during a maritime incident, leaving him a solitary spirit anchored to the vessel. His inner turmoil directly manifests as the ship's haunting presence, a symbol of his inability to find peace. Anpanman and his allies investigate the disturbances, uncovering Pyonkichi's connection to the Yūreisen and learning his sorrowful history. Moved by compassion, Anpanman resolves to help him overcome his grief and break the curse binding him to the ship.

Pyonkichi's journey focuses on achieving emotional resolution. Through Anpanman's intervention, he confronts his past and reconciles with his fate, ultimately finding peace. This transformation halts the ship's disturbances and allows it to rest, freeing Pyonkichi from his spectral existence. His story concludes with resolution, emphasizing themes of loss, redemption, and the healing power of kindness.

This character appears exclusively within this narrative arc.