Kyoukai no Kanata is an excellent series. It’s a short, 12-episode series that is one
of those that I really wish they had made longer. It’s so much fun to watch - great plot, great
character and animation style, great music, great interactions among the
characters - that it’s really a shame that they only made it 12 episodes.

The basic premise of the world the series is set in is that
youmu are hunted down and defeated by Spirit Warriors. Any defeated youmu becomes a gem-studded stone,
which can be taken to a special shop and turned in for money. Thus Spirit Warriors not only rid the world
of bad youmu, they also can get paid for their efforts. Akihito, as a powerful half-youmu, is under
constant watch by a house of Spirit Warriors, the Nase, and especially by a
brother and sister who go to high school with him, Nase Hiroomi and Nase
Mitsuki. He’s also watched by two good youmu, Ai and Ayaka, who run the shop
where youmu stones are turned in. When
Akihito’s human side loses control, his youmu side is insanely powerful and
nearly uncontainable, so among others, these four watch him and try to keep him
contained.

It’s touch and go up until the end of the last episode, but,
major spoiler here, everyone survives the series. I’m glad to be able to say that because the series
would not have ended up so high on my list of good anime if they had killed off
either Mirai or Akihito. Although you kind of don’t expect everything to turn
out well, the ending is nice and satisfying.
Everything does turn out well. In fact I'd have to say that the
ONLY bad thing about this series is the length.
There are so many other details that could have been expanded on with
side characters, and with the main characters, that I really wanted it to
continue. Like, what’s really up with Nase
Izumi, and why did she have to step down in favor of Hiroomi leading the family
(other than the comment that she’s carrying a youmu inside her)? Or, how did Ai and Ayaka end up running a
shop for turning in youmu stones? Or,
WHAT is up with Akihito’s mother?!? And
how did Akihito come to be? See? So many more things could have occurred.
Still, the series is well worth watching. The character interactions between the four
main characters alone are often just priceless, with Akihito’s fetish for girls
wearing glasses and Hiroomi’s fetish for his younger sister. There’s even an episode where they become an
idol singing group to defeat an odd youmu.
The series is so much more than just a high school love story. I recommend it highly.