the main story: was absolutely beautiful and wonderful and bittersweet and so perfect! it was so much more realistic than so many shoujos, which is quite a feat since it freaking has a VAMPIRE in it! i loved the heroine, and it just twists your heart. people who like marriage endings and happy-go-lucky will probably not like this, but you know what - that is incredibly boooring. 😉
i don't think the ending ruined it.. just supports how realistic it was!
i mean, he killed her mom.. and didn't feel that remorseful (at the time), so why would she turn into a vampire? she was punishing both him and herself by dying, which is the beauty of it all, and shows what strength she has, because she probably would have turned into a vampire and kept loving him despite everything
it WAS sad, however... if the story had shown a little longer after, it would have been heartbreaking :< in fact, the little extra at the end WAS heartbreaking~ almost makes me wish for a marriage ending... almost! (ohhh i just got how this is related to heaven's will! omg that's awesome, i'll have to re-read heaven's will then...)
the side story: AWESOMEEE! sooooo cute and adorable. i loved it so much, and i loved both the hero and heroine. their reactions, their character, everything about it was adorable and so funny. i was cracking up.