Manpuku serves as Suzu's dedicated caregiver, tasked with raising her as the designated successor following the loss of her parents. He imposes a rigorous training and upbringing regimen to prepare her for future duties. Their bond is reflected in Suzu's use of the informal familial address "Jii" for him, signifying a deep, longstanding personal connection. Manpuku's character is solely defined by his role as her guardian within the documented narrative.