I am so glad you like it ahh!! lol if I hadn't been introduced to the game and the ships by my friend who was already well versed I'd also be very confused. ppkm is an abbreviation for pee pee ketchup man - which is a very non-conventional ship name for noelle and akarsha. pee pee coming from min calling akarsha 'pee girl' on behalf of saying shit like 'it's pee pee time', the pee pad incident, or the toilet water incident, and ketchup man for noelle from the time she and min drank pani at the buffet and akarsha dubs her 'ketchup man'. probably one of the most convoluted and strange ship names out there but it suits them rather well I think,,, honestly my fav ship name ever more ship names should involve words like pee and ketchup. <3 I hope that answered your question!!