After reading the most recent chapters, I realize the "Alice" in Alice in Hell is actually referring to Shuu himself, since he was the "Alice" in his father's gang. Kinda makes me have the feels ;n;
Translator here. The Alice in Hell thing is actually a bit of a mistranslation and gets a direct reference somewhere in volume 5, when the doll Alice is referred to as "Alice from Hell" (or doll from hell, I don't remember exactly which) which would have been a more accurate translation of the title in my opinion.