He has a lot of internal conflicts with people leaving him and being abandoned. He would do these things to see who would be loyal to him or the other person that was penetrating. This is definitely not a pwp story. There is a good amount of sex, but definitely not a pwp. A pwp is something like this https://www.mangago.me/read-manga/the_princes_educational_xx_mannequin/
Or
https://www.mangago.me/read-manga/bero_bero_yuru_yuru_tanoshii_sex/

Just skim readed this
Its clear its porn with no plot
But can anyone explain to me why the top wanted the bottom to sleep with other ppl?
Like is there a reason at all?