Responses
People of their type are only devoted to a single fated person for the rest of their lives, thus they no longer have the desire to live after their fated one passes away. They don't see the purpose of continuing to live once their loved one has left the world. As a result, I'm guessing that they either commit suicide or gradually stop 'functioning' in life until they die of malnutrition, dehydration, starvation, or some of other condition brought about from not taking care of themselves. It's rather sad, but it is a portrayal of their profound devotion to that one person.
did the father say that they didn't live long after their fated one dies because they choose death or is it they just died or am i thinking of "acid flower"