Zero: So to sum up
Roll - Robo-Loli!
Ciel - 14 Year-Old! (Insert obligatory "Japanese age of consent is 13!" here)
Prairie - Loli but she's hundreds of years old!
EXE - 2D Waifu!
Caskett - INCEST! BUT NOT REALLY!

Man. MegaMan hit all the notes.

Trigger: ♥♥♥♥♥♥♥ Zero, making sure every Roll incarnation is spelled out in terms of archetypal Japanese fetishes.