P4: first time through I did Yukiko but as of now i'm trying to be a playa. P5: I'm currently dating Kawakami

Something with characters from both 3 4 and 5 danceing together

Id have to say the final boss(s) of conception 2 children of the seven stars as in all 5 witch are back to back and the first boss is two seperate people and the final 3 can attack 4 times in a row with up tp 1 mil dmg