Waka Okusama wa Udemakuri (TV series)

Tomoko and Satoshi, who got married after the great love affair, start a sweet newly-married life of only two people. At that time, Satoshi's older brother, Haruo, suddenly ordered an American relocation order, so his three daughters, Mari, Hanabi, Chieko, and his mother-in-law are suddenly living with them. - IMDb