ひろってきた仔犬の巻

Kenichi and his friends find an abandoned puppy in the park and decide to keep it in secret without telling their mother. Kenichi and his friends are at a loss when their mother finds them and names them Little Shishimaru. Feeling sorry for the situation, Hattori uses his ninja techniques to help keep Little Shishimaru at home.

公園に捨てられている子犬を見つけたケン一達は、ママに内緒で飼うことにする。小獅子丸と名付けかわいがっていた矢先、ママに見つかり困り果てるケン一達。その様子を気の毒に思ったハットリくんは、忍法を使って小獅子丸を家に置いておける手助けをする。