Aiko is really cute but is up against some heavy competition.
Honestly, this one is too hard. (;´Д`)

Yuuma is perfect though, 100% marry. She's stupid, but in a good, earnest way that I can easily live with.
Pakira is very cute but I think she's just okay. I guess she dies. ( ´ω`) I don't want to kill any of them. (;´Д`)
Liru is hot and would be my no.2 marriage choice, but she loses to Yuuma, so she gets to get fucked. She's also the smartest out of them, although this isn't a high bar at all.