What is the problem that Hana-Saki-Jiji is struggling against in The Story of the Old Man Who Made Withered Trees to Flower and how can they solve it?

Hana-Saki-Jiji is fighting envy.

Explanation:

"The Story of the Old Man Who Made Withered Trees to Flower" shows a couple who have to deal with the envy and evil of their neighbors. That's because this couple gets many blessings and valuable things in their lives, through their dog. However, the jealous neighbor tries to get these blessings for him and ends up destroying everything good that the blessed neighbors have.

yes they most likly are and have planed t try to bring human life and supplies there also(due to global warming and other harmful resorces)