The inner me is crying like a little child, without restraint.
The outta me is composed, I shed some tears.
Not because of the end events in itself but because of the missed time and the wasted time, the made promises and hopes that weren't fulfilled.
Don't expect an easy mushy manga with a clean happy end.
I had to start reading chapter summaries at the vk wikia too from ch75 to ch88 or something - actually the Sara story arc. Partly because of terrible translation skills but also because of mixed fast switching story lines, character swaps (even completely unimportant ones with lame side stories), dynamics and bubbles and thoughts that were not always clear from whom they were. What a mess. That mentioned story arc ruined the manga quite a lot anyway.
Until after the middle of the manga, let's say till ch60 or so, I liked it. Even when it noticeable lost appeal after the first story arc with Yuki at the school. With introducing the next crazy Pureblood Sara is went downhill fast. Her entire storyline started to bore me quickly until it was annoying and bothersome that I couldn't be arsed anymore to read all her pages...
I knew she will die anyway so why bother to drag it out so much?
The re-installation of the Night Class felt like a source for filling material.
The last 3-4 chapters were good again. Dramatic and tragic end. Bittersweet without the sweet.
Sometimes I like such ending (e.g. Code Geass style) mostly not. But here it was okay. I don't hate the end. The additional chapters 93.5 and 93.7 are kind of cute, touching and top off that particular ending.
Personally I would had hoped for a treatment and fresh energy for Kaname or Yuki also being turned into a human after the thousand years of waiting time. After all he was and remained her love and Kaname wouldn't have minded to spend more time with Yuki either.
Sacrificing her own life to turn slumbering Kaname into a human when she has two children is quite drastic. Poor Zero, he then has lost his love (and food source).
I didn't even mind who'd Yuki end up with as long as she firmly does so but when it looked like there is progress in the Kaname x Yuki department (after Kaname showed her his past... I totally had hope) he suddenly dropped her to fulfill his old agenda - what the...
Despite that about 10 chapters before all his worries were to lose Yuki beside him some day and 50 chapters before all his plotting was to hopefully end up with her.
I didn't like how it turned out with him. It was like those 10 years were a waste. He could have started his plan way sooner and left Yuki with Zero whom he built up to a great weapon and shield for her.
First part, he admitted near the end, was a wrong decision on his part. He had planed to start his old plan after Yuki was brought to Kaien Cross. But the idea of still being near her and the possibility to become even closer later let him change his mind.
At the end it was a dream for him, a short lasting dream of a 'what if...' with Yuki, when he woke himself up from it to follow his path that he dropped thousands of years ago. Alone.
Regarding the brother sister issue:
Purebloods are called like that because they have never intermingled with humans. As the nature of a Pureblood either seems to be not to care to care too much (in an aggressive manner) and since there weren't many of them to begin with it was not uncommon that they married within the close family. Like brother and sister.
Regarding Kaname in that issue:
Kaname is introduced as the son of Yuri and Haruka Kuran which is only half true. It is later revealed that he was in fact a dried up mummy in a coffin for thousands of years in slumber. That thing in the coffin was an ancestor of the Kuran clan, he was the ancestor. The first Kuran vampire at all from 10.000 years ago.
Someone wanted his power and to gain it he had to revive him just to devour him afterwards. The reviving worked but Kaname mummy was too strong and overcame his attacker. To avoid the severe blood thirst after that many years in slumber he turned himself into an innocent baby with sealed memory that leaked later when he was a larger child... he was rised by the siblings as their own child Kaname.