Ninja Hattori-kun

When the Sanyo family welcomes an unexpected guest into their home, their lives take a thrilling turn. Hattori, a young ninja from the Iga mountains, arrives with dreams of blending in and attending a regular school. Quickly forming a bond with his new friend Kenichi, Hattori navigates the challenges of school life while keeping his true identity under wraps. Alongside him are his brother Shinzo, the loyal ninja dog Shishimaru, and Kenichi's girlfriend, Yumeko, creating a lively and adventurous circle.

However, their peaceful existence is disrupted by the looming threat of rival Koga ninjas, particularly the devious Kemumaki and his cunning accomplice, Kagechiyo the Shadow-cat. As Hattori and his friends face off against these adversaries, they find themselves in a series of comedic yet action-packed escapades that test their skills and friendship.