Blood+ Episode 1 review : First Kiss.
The first thing Blood+ shows you is a girl who can't clear the bar.
Not a monster. Not a katana. Not a spray of blood across a classroom window. A high school track athlete in Okinawa, missing her jump, laughing it off, going home to her family's bar for dinner. If you came in off the back of Blood: The Last Vampire expecting the cold, feral Saya who opened that film by putting a blade through a man on a subway car, the premiere of "First Kiss" is a deliberate slap in the face. Saya Otonashi eats too much, sleeps too much, and needs regular blood transfusions she doesn't understand. She's sweet. She's goofy. She has no idea what she is.
That's the whole bet. Fifty episodes ride on it, and Episode 1 is where Production I.G puts the chips on the table.
Where it came from
Blood+ is an anime original. No manga came first. Asuka Katsura's Blood+ manga launched in Monthly Shōnen Ace in July 2005, three months ahead of the broadcast, but it covers the same story events as the anime and ran as a companion, not a source. The show had no readership to serve and no blueprint to betray. Every choice in this episode is the studio's own.
The ancestor is Blood: The Last Vampire, Production I.G's 2000 film. Blood+ borrows the name Saya, the chiropterans, the sword and the Okinawa setting near an American air base, then throws out almost everything else. It plays closer to a reinterpretation than a sequel, and the person standing in the middle of both is Junichi Fujisaku.
Fujisaku was one of the core members of Team Oshii at I.G. He helped create The Last Vampire alongside Kenji Kamiyama, directed its video game and wrote its novelization. He wrote seven scripts for Ghost in the Shell: Stand Alone Complex and three more for 2nd GIG. Blood+ was his first job as chief director of a TV series, and he didn't delegate the opening. Fujisaku is credited as director, series composition and scriptwriter on Episode 1 itself. The man who wrote the original Saya's novel sat down and wrote her replacement's first day.