Masaru Arai, 58, and his son, Katsutoshi, 28, from Tokyo's Asakusa are carpenters from a long line of master craftsmen. Katsutoshi, who has three sisters, is the youngest child. The father and son love working together and always strive for perfection. Although their yearly income can fluctuate dramatically, their pocket money -- and their lifestyle -- changes very little.

Masaru: I am a typical blood type-B man: emotional and stubborn. I like men with the same qualities.Katsutoshi: We are the same; only our age is different. Oh, and I have more hair, that's all. We work together six days a week so we have developed the same personalities.

Masaru: I am so happy that my son is following in my footsteps. We have a 90-year-old client, who runs a bar that my father built, and when he heard that my son was also becoming a carpenter, he burst into tears.