What about all the times his own mother kept feeding him Boston Crabs and Tornado DDTs for constantly getting a D-es in Japanese and Arithmetic?Surely all those time old butler crashing on him back then build up his sturdiness to survive this one
But she already has her own harem, of a wilful bishonen, ex-NEET otaku, and reformed villain with mean streak.Please for the love of God give me harem ending please, Haruo need both of them if not he kill himself.