Sennin serves as a secondary character in the narrative. Visually defined by a balding head and bandages covering parts of his body, he occupies a shamanistic role. Acting on protagonist Don Jirochou's request, Sennin engages in attempts to eliminate the cyborg Alice. During their interaction, he perceives an underlying romantic connection between Don Jirochou and Alice. Despite this observation, his efforts to carry out the requested task prove unsuccessful.