Most of Japanese families, the father is the strongest of all. If a family has an important problem, the final decision will be up to the father. This tendency is because of financial aspect and traditional aspect. Mostly, father makes large part of family's livelihood. So, if a family has a plan to buy something expensive, the decision maker will be the fathers.
Japanese people attach importance to the family line.
In August, relatives gather in their parent's home, and visit an ancestor's grave. Traditionally, there are many rules about relatives. Before the ending, I would like you to ask about culture in your country. In Japan, there increase divorce rates. In Japan we've got more and more freedom than the past.