Kip. 2096: You Should Have Been Taught This Already

2096

Saburouji was creating a firearm called a moppan to further study explosives. There, Rantarou and his friends arrive, and claim that they have not learned about the moppan yet. Saburouji doesn't budge, saying that 'you should have been taught this already!', and goes to check with Doi-sensei... (Source: Nintama Rantarou Wiki)