Although Konatsu's parents looked normal, I guess it's because his mum
died when he was young and he was raised as a girl ... Hmmm... Kunou and
Kodachi are that way because ... well, just look at their father! And their
mother probably died when Kodachi was born, or just after that... *sigh*

I think she ran away before Kodachi was born. :)

So... How is Kodachi in the series, let alone in Nerima, if this
happened??? O_o

Kun-chan...