What even is the point of baiting us with the cute drill hair ojou-sama when the author is clearly railroading the guy into the Hinako route. If, against all odds the author has the balls to make this into a true harem route, then fine.
But it's likely going progress where Itsuki will somehow break off Tennouji's marriage arrangement (as a friend) or she breaks it off herself and will say along the expected lines like "I'll carry the Tennouji name without the need for connections!!" They sing kumbaya, as she tearfully waves Itsuki and Hinako away as they ride of in the stereotypical sunset. Why even add the harem tag, man.
