Crayon Shin-chan - episode 19 - 06 Sep, 1992

Misae and Shin-chan stay indoors due to bad weather. Hiroshi returns from work and stays out, as they all fall asleep. Some Rose Class students urge Shin-chan to come after school with his class to fight, but Shin-chan acts lazy, angering the students. Shin-chan writes a letter to Misae, which states that Shin-chan loves his mother a lot. Misae gets emotional upon reading it. (Source: Wikipedia)