1837화: 란타로와 친구들이 야간 순찰용 비밀번호를 정하고 여섯 번째 해의 학생들이 도착하다

1837

To stop the trespassers, Rantarou and the others decide on passwords and, two at a time, they go on a night patrol. Then, the 6th years arrive. Not knowing whether the 6th years are impostors or not, the Ha class check their identities using the passwords. (Source: Nintama Rantarou Wiki)