The protagonist's little cousin is so adorable in the game. Especially when she starts to look to the protagonist as a big brother figure. I can't say I feel bad for Adachi, reminds me too much of Matsuda from Death Note. So really I can only laugh at him.
P1 and P2 are for PS. You might be able to play them on PSP if you use a ROM with emulator software. P3 and P4 are for PS2 and I really recommend P4 because it's a whole lot of fun and probably one of the brightest Megaten games ever. It's coming out in English in December!
If you're interested in P2 there's a group releasing an English patch soon:
Adachi's back is gonna break at the count of 10. ;D I didn't notice the anatomy problem until I read your comment. (lol OTL) I kinda like the way you color the clothes. ^^ Especially the Hero's one, his jacket's texture looks nice.