[DISCUSSION] PSN (Japan)

I just got a Japanese PSN Account, I got this mainly because I share with my friend and we are mainly interested in Vocaloid, Super Sentai, Kamen Rider and Gundam. Can anyone confirm if there are any Sentai and Rider games (we already found Gundam and Vocaloid)?







PS: Do I have to buy Japanese PlayStation cards for money or could I use regular Canadian Cards



Thanks/Arigatou :D