Koyako MACHIMURA, the father and son of a close adviser

Koyako Machimura, 37 years old, is a housewife. My husband and my son's three families, ordinary but happy family, but I am a little frustrated at night with my late husband for overtime work. But I can't blame my hard-working husband and comfort him by myself. One day, my son shows me his stuff. that's just what i was surprised about...