While Hattori often appears indifferent or focused strictly on his ninja training, it is suggested he secretly loves her too. In certain episodes, such as "Hattori Blushes," his composed exterior slips, revealing his true feelings.
In several episodes where Hattori is genuinely in danger (e.g., fighting a stronger, external villain or caught in a natural disaster), Sonam freezes. She abandons her attack mode. In one specific movie special (rarely aired on Indian television but present in the Japanese archives), Sonam secretly heals a poisoned Hattori using Koga herbs, leaving before he wakes up, telling her cat (Ninja Kankuro) that she “just doesn’t want to beat a sick opponent.”
Hattori lives in Sonam’s home (with her younger brother Kenichi) under the guise of a foster child. His primary duty is to protect Kenichi. However, because Sonam is Kenichi’s elder sister and frequently in danger (due to Kemumaki’s schemes or her own curiosity), Hattori extends his protection to her. This creates a :
Sonam discovers Hattori’s true identity (not as a fake brother, but as a displaced Iga ninja). During a training accident, Hattori is injured, and Sonam nurses him back to health in secret. For the first time, they converse without Kenichi or Shishimaru (Shinzo) as buffers. Hattori admits that Sonam’s intelligence and bravery remind him of his own mother, who gave up the ninja life for love. Sonam challenges his archaic rules.
The relationship between and (originally known as Tsubame ) is a central, albeit subtle, romantic subplot in the Ninja Hattori-kun series . While Hattori often prioritizes his ninja training and discipline, Sonam is openly affectionate, creating a dynamic defined by unrequited devotion and hidden feelings. Relationship Dynamics