Arc 3The Kujiraai Island Mission
Kei and Team 7 uncovered Matou’s alliance with Cloud Ninja while investigating a string of murders on Kujiraai Island, and Kei nearly died defeating Hato. After returning to Kirigakure, Kei learned his team assignment had drawn unusual attention as the village prepared for a possible Cloud Ninja threat.
- Ao led Kei, Mei Terumi, and Kisame Hoshigaki to Kujiraai Island on a C-rank investigation, where Shinji Akita and Man briefed them on the murders and the massacre of the Yamamoto family.
- Ao split the team to investigate the killings, but Cloud Ninja ambushed Kei and Mei Terumi, who defeated their attackers and learned that Matou planned to reclaim the Land of Whales with Kumogakure’s help.
- Kei and Mei Terumi found Ao surrounded by Hato and Cloud Ninja after Shinji Akita and his guards had been killed, then fought alongside Ao against the attackers.
- Kei killed the Cloud Ninja Genin and battled Hato, surviving a near-fatal sword strike before overwhelming him with Ice Release.
- Mei Terumi carried the unconscious Kei to safety, and Kisame later told him that Matou had been captured and the mission completed.
- After recovering and returning to Kirigakure, Kei met Minazuki Shun, who revealed that someone outside the Yuki Clan had arranged Team 7 and urged Kei to remember his identity as a Yuki.
- Ao reported the Cloud Ninja threat to Karatachi Yagura, who ordered frontier reinforcements and summoned senior leaders, while Kei watched for signs of mobilization.
- Ao gathered Kei, Mei Terumi, and Kisame after their rest and led Team 7 out of Kirigakure.