I think theyre doing the story in a nice way so we all get our fanservice and they do it, but he can continue harem'ing with her friends and I bet stepmom and son just give each other a "wink" once in a while haha. Until season 2 when father gets sick and is out of the picture !!
@RapidLord
In our discord discussion we found out that plums in general has heart inflammation benefits! Hope that gives some explanation to the medicine portion.
Phytochemicals and nutrients in plums lower the inflammation that triggers heart disease...