It's got so many rough spots (specially the eroge scenes, the only good ones are from Ciel-senpai my beloved) that it should be at most a 7/10. In fact, that's what I thought upon finishing it for the first time, but as time went on, I just couldn't get Tsukihime out of my head. It's so iconic, genre defining, and how the story progresses throughout the different routes is still fascinating as it undergoes a complete genre change. Even if it's a late 90s doujin shut-in otaku escape fantasy and sometimes it's borderline Twilight for weebs, I don't care, I love this.