A trivial point, but who is flying where in the airplane toward the end?

I thought it was their dad.

Wow this was way more underwhelming than I thought it would be, if Mei had broken in tears at the sight of Yuzu, went and kissed her and from there make everything right herself this could have been decent, but no, now it seems that all the problems she had with their relationship weren't problems at all and she was just playing hard to get? funny how everyone else opinion on the matter, their mom and dad even their grandpa mattered so little we didn't even see what they said to come out, like everyone was like "cool" and happy ending.

Have you watched Fingersmith before? This manga is like going towards Fingersmith's direction

I read the plot from wikipedia and it was pretty interesting but the thing here is that Mei is the only one doing the deceiving here, Yuzu is being honest and giving it all for them to get together but Mei priorities lie elsewhere and still she does the whole romancing the dumping thing, that's why I can't stand her.

I really like this series, I hope they reconsider and stay together as its obvious they are so in love with one another, hidesuke saving the day once again, I really like this guy but still hope maya ends up with michiru and he ends up happy with another person.

The possibility is that this was never the story of Yuzu+Mei as a couple, and not Yuzu's story per se either, but rather the story of how Yuzu sees Mei. As she understands Mei better, Mei gets more "screen time". We the readers don't get any hints about the incoming betrayal because Yuzu never did. As the betrayal happens, Mei is no longer part of the story because Yuzu doesn't know who Mei is anymore, and again we are supposed to feel as she feels. Does that make sense?

How does the student-council election fit into that theory? How does the date-with-written-manual fit into that? How does the introduction of Shirapon and the festival sequence support that?

I was gonna comment about this but you did it first, I think people here are being way too optimistic about how the story developed, I mean if that is true and Mei knew all along that she had to go with the arranged marriage thing and was planning to do it then she is even worse that I was thinking of her before. Like "I know I'll have to marry a random guy to inherit the school so better have my fun now with my sister while I can" and after the student-council election -> date-with-written-manual -> festival sequence happened she was like "well that was fun, now Yuzu get the fuck out of here time to go back to business", like those douchebag characters in shoujo manga that just go out with the girl till he is bored and then dump her.

Nice ending but 99.99% romance manga end like this, wish they'd be a lil bit more creative.

I'm almost glad that this is ending at first this one was entertaining but now I rage when I see Mei's stupid face, she does not deserve Yuzu I hate characters that get the happy ending without doing shit to achieve it, wish Yuzu ended up with Harumin(best girl), I feel like nene wishing for the impossible.

Wait, isn't it the same author from that oneshot in which protagonist's mother finds her collection of mother/daughter books?
An age gap story this cute? On the first page? Day already made, and it's 1.45 at night. Probably the best one shot in quite a lot of time. Love the art style as well.
Also, the plot of this one reminds me a bit of this picture http://dynasty-scans.com/images/4306 It's not a cookie-cutter copy by any means, but one of the closest you can get plotwise.

I need to know which manga you are talking about, i've never seen a manga with mother-daughter incest with the plot you mention.