What happened? Seemed like is was going the route of Otomoe games where there is an unknown sequel and it looked like a new set of heroines, and then its done 3 chapters later? I guess the author shot himself in the foot by having all heroines conquered in a single chapter, but honestly I would have been cool with a slice of life with him and the girls just hanging out.
But alas, like every other work, we never get to see post conquest.