Ryuboshi
Ryuboshi is one of the three Neptune brothers who serve as princes of the Ryugu Kingdom. He assists Fukaboshi and Mamboshi in official duties such as investigating reports of illegal immigrants and responding to attacks on the kingdom. Ryuboshi is known for his concern over family members including his father Neptune and sister Shirahoshi as well as his participation in efforts to protect the realm alongside his brothers.
Appearance
Ryuboshi appears as a giant oarfish merman distinguished by his long hair. He stands beside his brothers during public arrivals and displays exaggerated expressions in reaction to unfolding events.1
Ryuboshi maintains a consistent physical presence among the royal siblings when they arrive at locations such as Gyoncorde Plaza or distant plazas during crises.2
Personality
Ryuboshi expresses worry about his father and Shirahoshi when unusual sounds occur near the palace. He proposes allowing Shirahoshi to avoid certain meetings due to her fears.34
Ryuboshi argues openly with his brothers during family discussions about travel and safety. He joins them in shouting with distressed faces when facing sudden threats.56
Ryuboshi displays concerned expressions alongside his brothers when observing distant events or potential dangers to the palace. These reactions occur consistently during moments of uncertainty involving family members.78
Ryuboshi shows shocked expressions with open mouths and sweat drops when sudden developments unfold before the royal siblings. Such reactions mark his response to unfolding crises.9
Abilities and powers
Ryuboshi charges forward with weapons alongside Manboshi when intervening in public incidents involving captured family members at Pangaea Castle.10
Ryuboshi joins his brothers in using merfolk arms-manship techniques during confrontations at Gyoncorde Plaza. The techniques include KOUIN RYUUSUISOU along with SHICCHIN BANPOU and RYUUGUU RAUMAN as the group engages threats.11
History
Ryuboshi forms part of the royal sibling group identified as the three Neptune brothers from the earliest records of their activities. The brothers travel together aboard a massive royal gondola to distant parts of the island where they conduct inquiries about unauthorized arrivals.1213
Upon reaching the cove the brothers announce their purpose and demand information from the gathered fish-men and visitors. Their dramatic entrance creates immediate panic among locals while they press forward with their investigation.13
Relationships
Ryuboshi and his brothers pledge to their mother Otohime that they will grow into fine warriors and protect Shirahoshi with their lives. Otohime smiles and thanks them for this commitment.14
Ryuboshi participates in family arguments concerning Shirahoshi's participation in events while Neptune addresses relocation petitions. The brothers react together when suitors approach Shirahoshi at gatherings.1516
Major battles
Ryuboshi arrives with his brothers at Gyoncorde Plaza amid an ongoing attack involving drugged sea beasts. The princes react with alarm upon seeing the chaos and prepare to engage the threats.1711
Ryuboshi arrives with Fukaboshi and Manboshi at Gyoncorde Plaza while an attack is underway. Soldiers immediately recognize the princes by name as they appear in the distance amid the chaos.18
Ryuboshi and Manboshi advance despite warnings during an incident at Pangaea Castle where Shirahoshi is held captive. They declare they cannot stop because of the pitiful state of those involved.19