Mamange is clearly overworked with house chores. I wonder where her useless husband is drinking all the days away, the bastard.

Sorry I keep imagining her "husband" to be Youmu, you know the whole homosexual reproduction trope... -_-''

maybe she somehow still single...

Welcome to - the Twilight Zone.

Whoever it is/was must've been either human or lunarien. How else would she have given birth to Kaguya and Eirin?