Manboshi
Manboshi is a prince of the Ryugu Kingdom and one of three royal brothers tasked with protecting their sister Shirahoshi. He serves under King Neptune and acts with his siblings during threats to the palace and the princess. Manboshi is known for joining alarms over disturbances at Hard-Shell Tower and for answering his mother's call to become a warrior who defends his family.
The prince appears in multiple incidents involving the royal family, from early warnings about Shirahoshi's safety to later confrontations at Gyoncorde Plaza and events at Pangaea Castle. His actions consistently place him alongside Fukaboshi and Ryuboshi in moments of crisis.
Appearance
Manboshi shares the physical traits common to the merman princes of the Ryugu Kingdom, appearing alongside his brothers in scenes that highlight their collective presence during alarms and arrivals. His expressions shift from alarm to shock and distress across different encounters, often shown with open mouths and sweat drops when reacting to sudden dangers.12
In later gatherings Manboshi stands with his brothers in the distance or labeled in separate panels, maintaining a consistent royal bearing while observing or preparing to move forward with weapons drawn during tense situations at public courtyards.34
Personality
Manboshi exhibits a protective and alarmed nature when family safety is threatened, quickly reporting incidents to his brothers and displaying concerned expressions during palace disturbances. This trait appears consistently as he joins his siblings in responding to cries from Shirahoshi and in preparing to act against immediate dangers.56
He shows distress through shouting with his brothers when facing overwhelming threats, yet remains determined to intervene even when warned of severe consequences. This resolve surfaces when he and Ryuboshi decide they cannot stop their actions because of the pitiful state of an opponent.78
History
Palace incidents
Manboshi later reacted with alarm to disturbances at Hard-Shell Tower when Shirahoshi's cries echoed through the palace, joining his brothers in assessing the situation after a guard change allowed an intruder inside. He continued to appear with concerned and shocked expressions during subsequent family crises at the royal grounds.910
Otohime's request
During an early family discussion Otohime asked her sons to grow into fine warriors and protect their sister with their lives, prompting an immediate affirmative response from Manboshi along with Fukaboshi and Ryuboshi. This moment established their ongoing duty to safeguard Shirahoshi from potential dangers that could trigger uncontrolled power.11
Conference preparations
Manboshi joins his brothers in later discussions about island relocation and human distrust during preparations for a conference. He hears Neptune reference the petition signatures while the family debates Shirahoshi's participation in the journey.12
At Pangaea Castle Manboshi stands with Ryuboshi among gathered royals and bodyguards from many nations. The brothers note the presence of monarchs and guards while receiving nicknames from attendees during the mingling.13
Relationships
Manboshi maintains close ties with his brothers Fukaboshi and Ryuboshi, frequently appearing together during alarms, arrivals at plazas, and arguments over family decisions such as whether Shirahoshi should join a voyage. These interactions show him participating in both reporting duties and heated discussions about their sister's safety and choices.1412
As part of the royal family Manboshi travels with his relatives to events like the conference at Pangaea Castle, where he and Ryuboshi are addressed by nicknames and observe the attention Shirahoshi receives from other royals. He also joins efforts to intervene when Shirahoshi faces capture, acting alongside his brothers despite risks to their standing.138
Manboshi argues openly with Ryuboshi over family choices regarding Shirahoshi's involvement in upcoming travel. Their exchange occurs amid watching sea creatures and soldiers as Neptune and Fukaboshi also speak.12
Manboshi travels with the royal family to Pangaea Castle where Shirahoshi attracts attention from other royals. He reacts with the group when suitors are rejected and when a woman attempts to smooth over the resulting offense.13
Major battles
Manboshi reaches Gyoncorde Plaza together with Fukaboshi and Ryuboshi while an assault continues in the area. The arrival draws immediate vocal acknowledgment from the soldiers stationed there who identify the three princes by name as they approach the scene. This recognition underscores the princes' established presence among the kingdom's defenders during the crisis and signals their readiness to engage with the situation at hand.15
Manboshi stands with Fukaboshi and Ryuboshi as the group maintains its position amid the events unfolding at the plaza. Each brother receives separate visual distinction in the moment allowing clear identification of Manboshi as an individual participant in the royal response. The collective stance of the princes reflects their ongoing involvement in the defense efforts without any single figure dominating the observed formation.16
Manboshi charges forward with weapons and a determined face alongside Ryuboshi at the public courtyard of Pangaea Castle after Saint Charlos captures Shirahoshi. The brothers prepare to act despite warnings that their intervention could doom their country.48
Manboshi shouts that he cannot stop now because it is too pitiful to see how far Kuma has fallen. He continues the advance with Ryuboshi even as onlookers comment on their royal status and the possibility of burying Charlos in money.8