I'M SORRY but in real life people don't change their emotions like that. I still don't understand how Rin fell for Dai! And I don't see why the author made the story turn in that direction I would have been content with an ending that ACTUALLY REPRESENTED LIFE -___- I would NEVER have emotions like with a caretaker, maybe a development of attachment and trust but pure love?

This just doesn't happen, incest with someone who were raised with and had no feeling for what so ever before does not seem realistic...

I prefer incest manga like Flower of Evil, Houyou, I love my little sister etc.

The daughter role falls in love with the father/guardian role. Quite complicated there and the manga shows that very well.
Right up to the last chapter. That one is kind of a flop, there should've been another volume in between, showing how the father role works out his own stance and evolves it over the two years.

What really made the ending acceptable for me though, was the fact that the author treated the whole situation very carefully and with respect, that is to say, no smut or anything else that one might perceive as not as innocent and pure as the rest of the manga. It wasn't just a way to increase sales, so to say.
The ending was hurried for what ever reasons, but I could still feel the wish to make the ending enjoyable, and not just because it has the face of a scandal. It's not as simple as calling it a scandal and being unhappy with the ending, it's a very complicated situation that has taken years to grow and the manga really shows that. That's the reason I can accept the ending without any complaints except one: It's a bit too early, some more development right in front of the last chapter would've been good, so that we can understand just how Daikichi overcame his "moral horror" and why we arrived where we did.

That's the biggest minus in the whole story, the reason I'm going to give this manga an 8 out of 10, instead of full marks as the rest of the story deserves. We don't really know how Daikichi comes to his decision. "It's impossible for me to refuse Rin[...]" isn't enough, it just isn't. That's not what a (surrogate) father would say, so we need to know how he arrived there from his position as a father.

It does involve an ending that for most people would believe is nothing more than a fetish's dream however I think that it cheapens the rather serious approach that the artist chose to approach the dilemma. Had this actually been a fetish's dream then you would have seen much more perversion from the get go: panty shots, awkward moments where somehow Rin ends up over Daikchi etc. If anything the artist actually tries to respect the fragility, unusual and complications that stem from Rin's feelings. She never makes them perverse but shows the struggle, heartbreak and panic that Rin has as she begins to try and understand the dynamics of human relationships. Yes the ending is one that might feel too liberal for most people but the artist made sure to have both Rin and Daikchi treat it as seriously as possible and deal with the earnest love that Rin has for Daikchi. The problem is that it's not a simple "I am your parent" because Daikchi never actually adopted Rin, they always considered grandfather of being her father, of them seeing each other in a different light. It's the fact that the artist treated it as respectfully as possible is why I did not mind the ending.

The cliche thing would have been for Daikchi to have ended up with Koukai's mom.

But the end... man! why?! why the author corrupts such a pure story. What if Kouki ending up with Rin was Cliché? I would have liked that, I'd have liked a lot that kouki's mom ended up with Daikichi too. But it has to be such a sick ending, no matter if they aren't blood related, is still creepy that Daikichi can even think about Rin in a sexual way. :C So it sucked, it was creepy, and it broke a pure story.

I also disliked a lot Rin mom, and even more the fact that Rin was able to talk with her like nothing,

The ending is definitely a "feel good" kind though.

Faux-incest, that is. More specifically, father-daughter relationship.

I don't like the fact Rin and Daikichi end up together. It's creepy. Sleeping with the guy who raised you aka your dad? Really weird. And aren't they aunt and nefew too?