Since Mamachi started her pickle business, Papachi sarted to hit Mamachi a lot. However, I don't think Papachi is really bad husband. Papachi was one of the high governer in India, also, he was imperial Entomologist which has high fame. When Mamachi started her pickle factory, Papachi was about 20 years older than Mamachi. I think Papachi regarded himself as old man who cannot do anything, but Mamachi is young and passionate into her business, so Papachi started to feel foolish about himself, and realease that anger by hitting Mamachi. Finally, he broke his chair that he really liked, and show his regret about hitting Mamachi.