@ Rain - Their plans will end up blowing in their faces since normal dating techniques won't work on them. Child soldiers were bred to forgo emotion.
Kyomi is mainly not present on account of being 5. Kuu, as mentioned before, puts the protags in Jigsaw parody trap for an experiment and becomes interested in Irish when he manages to disarm the reverse carrot traps
Tabane and Kyuukai are gonna stress when they find both of their daughters/sisters interested on the guy that acts like the the opposite of what they believe in.