The salesman your average humble laid-back salesman who died after contracting a lethal illness and deciding to spend his last years enjoying life.
He now lives a purgatory in a train with his Tea Guardian Angel, having some sort of father and daughter relationship. She asks him to try out some food shown in one of the movies they have on TV. The Salesman didn't want to go out in the heat but after she threatened him that she'll have an emo boyfriend, he obliges.
Jon-Stan
Could moody brew be a jojo reference to moody blues?
Just-a-ng-dummy
No sorry! I don't really have much knowledge on the jojo series