>>40790880Apparently ewes don't lactate under normal circumstances without being pregnant, but in my short research, it's not uncommon for them to start producing milk if they're a bit overweight or have hormonal imbalances.
So since this is fiction, and Watame already has fat udders and hips, let's make an executive decision that she can lactate spontaneously based on whatever you want to use to justify it.
I just want a panting, embarrassed Watame running to (you) after dancing practice while her idol outfit is drenched with breastmilk on the inside, worried that she's going to start leaking during her concert and for you to do something about it.