The story was so bad, thank god for the speedup function in media players that enabled me to completely watch this in 1/3rd the time required.
Arisa is adored, imprisoned and abused by her dad on an island which she has no permission to leave. Harumi is chided constantly by her mom-in-law for not producing an heir. Merge their independent stories and add some unwanted and tasteless sex scenes with the usual ham acting by Jap actors in such movies and you get Rafureshia.