The clueless protagonist trope again? Benny, I get. Young, compulsive, goes full steam ahead without checking her surroundings. More the nature of a Berserker than a Hero, if you ask me. In this case a character meant for comedy relief, if you can actually call that funny.
He didn't expect the Duke household and Royal household... to have connections to one another? What?
The knucklehead protag schtick grows evermore tiresome. Looking back, I'm actually surprised I hung around for so long. This is really getting old.
"I didn't expect the duke's family to have connections to the royal family..."
Uhhuh... If not the dukes, then who would have connections to the royals? Dukes are the highest nobles below royals (unless there's a grand duke around). If the crown prince gets the king's throne, then the second oldest might be made a duke of this or that place.
and the series ended with our hero's unexpecteddeath.
Also Benny must have known beforehand. Look at that huge head of her. Must be preparing to head off to another series or a gacha game