[[WMG:minus's unseen mother is the real Goddess of the universe]]
minus's mom is the only one seen to actually be able to keep her in line, and the few times minus has tried to trick her, her powers haven't worked out that well. When minus got sick for fun, she made sure that minus knew exactly what being sick is supposed to feel like.
She married a nice man a decade or so back and had a child. She generally just lets minus keep to her own devices like a normal girl. When minus accidentally destroyed the world, she pinched the bridge of her nose in irritation, ignored her husband's laughter, and made minus go to meetings to fix her mistakes.
Occasionally we see one of the other divine existences in that world, like Larry, who's doing fine, and the odd man in the red suit.
Her name is nought. (Her husband's name isn't negative deuce, that's a common misconception.)
[[WMG:minus is LightNovel/HaruhiSuzumiya.]]
Do I really have to explain this one? I was waiting for this strip to get a WMG page just so I could add it.
[[WMG:minus is Haruhi Suzumiya's daughter.]]
This combines the above two EpilepticTrees, and makes a bit more sense than minus herself being Haruhi.
[[WMG:The red-haired girl minus sent back in time accidentally is her ancestor.]]
That's why minus couldn't change her back-- doing so would cause a TemporalParadox.
[[WMG:The reason minus' mother is so mean to her...]]
... is because she knows what minus is capable of, and knows that minus has no sense of what counts as DisproportionateRetribution, so she herself acts disproportionate in hopes it'll keep reinforcing to her that she's an authority figure she needs to follow. Whether this is because she's terrified of what minus would do to her once she realizes she doesn't have to listen to her, or because she's terrified of what minus would do to the world if she continued to have her rather skewed sense of morality into adulthood, is left up to the reader. [[spoiler: Considering minus ended up, albeit unintentionally causing TheEndOfTheWorldAsWeKnowIt...]]
[[WMG:minus is ReallySevenHundredYearsOld.]]
Or thereabouts. But she likes being 5-7 now, and she'll stop being that when she very well feels like it.
[[WMG:The field trip leader in the last strip is the child of minus and the green-haired girl.]]
She was born in the spirit world, and has similar hair characteristics to them both.
[[WMG:The strip symbolizes a nostalgic view of childhood.]]
The whole comic is basically the world as a primary school student would view it. Everything that minus does with her powers is something that a typical child would imagine, with their friends or just alone, and since kids don't know about unintended consequences, bad things happen as a result. (In fact, minus usually isn't there to witness them.) She's probably unusually ''nice'' by normal standards. The ending may symbolize [[GrowingUpSucks growing up]], moving on with one's life, and pursuing more grounded endeavors.