Not Really My Child

Before this, if you had asked Mahiru what is the weirdest thing that ever happen to him he will answer getting dragged head first into a vampire war (not to mention finding out your own cat is a lazy servamp/servant vampire)

Now? He would answer that waking up to find a child version of himself and his servamp would be the weirdest thing to have happen to him

or

"The Au ' where Mahiru got a level up from a housewife to a mom ' that no one asked for"/ "i swear, there's a reasonable explanation as to why I'm carrying a tiny version of myself"