When Sadao finds out that the promise to join his mother was just a trick to attract him to the island, he devotes all his efforts to finding her himself. At the same time spends the family fortune on building a public park and a western-style youth hostel on lands owned by the family.
When Sadao discovers that his mother's promise to join him was a deception, he devotes all his efforts to finding her himself. At the same time, he spends the family fortune on constructing a public park and a western-style youth hostel on lands belonging to the family.