Super Sentai S39E02 - Shinobi 2: Become the Last Ninja!

After their first encounter with the Yokai Army, the five Ninningers train at the Ninja Dojo. Takaharu gives some Ninjutsu advice to the others but Yakumo, who is a genius about that, doesn't agree with him. The five heroes start their ninjutsu training. However, Takaharu confronts Yakumo, who's standoffish attitude has worn thin.