Ryuun is the son of Masaaki Shukiro and Akina Shukiro , and also the nephew of Tsuki Shukiro and Taiyō Shukiro. Ryuun was only four years old on the day of the Shukiro Massacre. His parents, however, decided to betray the Shukiro Clan and joined the side of Konoha. During the massacre he was watched by the head of the Hyuga Clan. After a year of living in Konoha in disguise, Naruto, who was 101 years old at the time, had a heart attack. He survived but feared that he didn't have much time left. He summoned Masaaki, Akina, and Ryuun to his hospital bed and explained how to help make sure the Ryuun will be safe. Being the man he was, Naruto wanted Ryuun to become the next jinchuriki for his safety. His parents agreed to the plan. After learning the Eight Trigrams Seal, Ryuun's parents, Narut