My Granny Came From Tomorrow / My Grandmother is a Transmigrant from Future / Take Your Concubines, I'm Taking My Dignity

Danna Howard was raised by her grandmother, Reagan Sullivan, a time-traveler from the modern world, on ideals of gender equality and true love. But when her own famously devoted grandfather betrays everything they stand by and announces he's taking a concubine, the entire household is thrown into turmoil.