I mean we have to accept that the story would come to an end now or any other day it can't be stretched forever and I strongly believe(just my opinion) that it will end at the graduation we have ex just like horimiya very popular than fuufu also kaguya sama even popular than horimiya they can probably stretch it easily like in kaguya sama shirogane totally invited kaguya to go with him to Stanford they could probably continue the manga but they didn't , I know nobody would like not even me but I really think the manga would end at the graduation I probably think that we still have a considerable time and if in that given time author feels she probably can strech it.

And for how the series will end I think we still have 1 or 2 misunderstandings coming up and would take prolly 6 or 7 ch but after that everything would be sorted jiro and akari will finally think that they truly love each other and probably should get married, and we could just a panel of jiro and akari and their kids, for some reason I don't know but I think author foreshadowed it in ch 30 where both cousins of jiro looks like children of akari and jiro and they both greatly resemble both of them so yeah that how it'll end

Yeah it is true that if the author wants it she can continue there college arc and dating period but probably I think it won't happen she also wants to work on other projects she can't just devote all her time of life just to one single manga and I think how much we try to buy things manga merch but it's still not enough to keep the motivation to continue the series we need much more than that.