Ninjin
Ninjin is a village boy who forms part of Usopp's pirate crew with Piiman and Tamanegi. He participates in the group's activities around the village and joins efforts to confront threats from outsiders such as Klahadore and Jango. Ninjin is known for his loyalty to Usopp and his willingness to engage in direct action during crises that endanger the village and Kaya.
The crew's involvement centers on warning others and attempting to protect their home after learning of planned attacks. Ninjin remains with the group through multiple confrontations and later witnesses Usopp's departure from the village.
Appearance
Ninjin wears a dark outfit and skull cap during early gatherings with the crew. He later appears with a striped headband and goggles while observing events from a cliff edge.12
During indoor moments Ninjin holds a frying pan and shows sweat drops on his face. He stands with the other boys holding toy weapons such as swords and knives in several scenes.34
Personality
Ninjin displays determination when the crew decides to act against threats rather than flee. He insists on staying to fight alongside Usopp even after learning the scale of danger.5
Ninjin reacts with shock and urgency when learning of Klahadore's plans. He voices accusations toward the butler and pushes the group to intervene.67
History
Syrup Village events
Village gatherings
Ninjin spots Usopp resting in a tree and immediately calls out to him from below. He and Piiman then salute together while declaring that Usopp's pirate crew is ready for action. The two boys stand holding wooden swords and wear skull and crossbones clothing during this early exchange on the village path.910
Piiman and Ninjin question where Tamanegi might be while showing casual confusion along the village path. They later sit at a table displaying shocked faces and sweat drops upon hearing new information.1112
Urgent warnings
Piiman wakes Ninjin who complains that he is normally sleeping at that time of day. Ninjin reacts with surprise upon learning that the butler went to the shore and that something awful might happen soon.13
Later village interactions
After Usopp's departure
After Usopp leaves the village Ninjin sits with Piiman and Tamanegi watching the Going Merry depart. He reflects on the captain's choice and proposes an idea for the future.16
Future encounters
A pumpkin-headed figure later instructs Piiman and Ninjin to take research more seriously during an encounter.17
Relationships
Ninjin addresses Usopp as captain and follows his lead in group activities. The boys share a history of playful recruitment that began when they first met Usopp.18
Ninjin works alongside Piiman and Tamanegi in both routine crew drills and sudden crises. The three boys coordinate attacks and share concerns about village safety.19
Group interactions
Ninjin sits on a wooden fence with Piiman alongside Zoro and Nami while asking about Luffy's location and explaining Tamanegi's habit of suddenly disappearing. He later points out Usopp running along the path during another gathering at the same fence.2021
Ninjin reacts with shock during a conversation and shows wide eyes with an open mouth in surprise. The Usopp Pirates including Ninjin later display shocked open-mouth expressions and sweat drops together in a reaction panel.222324
Major battles
Ninjin joins Piiman and Tamanegi in leaping from bushes to strike Klahadore with a frying pan, shovel, and baseball bat. The boys continue hitting until Usopp orders them to stop.19
The boys pretend to remain unconscious before throwing pepper into Jango's face and striking him with a shovel handle. They declare the attack part of a new battle plan.25