Nope. You just need to connect your PSP to your PS3 and a wired connection. I do not know if it's a worldwide service because I only played with people from NA (Slayn312 and EvangelionHeart).
Sorry, Otokonoko, but do you have the updated version for this one? It's already in desperate need of an update. There's just way too many bugs, it's unplayable. Halcyon Days to Ver1.1
Hello, sorry for bothering me. I saw in a conversation that you uploaded a Crack to be able to correctly run the game Mashou No Nie 2, but the links you uploaded are down. Could you please update them?