The Laughing Salesman S01 E21 The Path to Karate

Moguro saves the young company man, Karasumori Kiichi, from being beaten by thugs and convinces him to learn karate every day with a tough master. Karasumori finds it difficult but perseveres for a few lessons. When he meets the same thugs in an alley, he tries to fight them, but is badly beaten up.