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The dark fantasy follows a high school sophomore named Akihito Kanbara. Although the boy appears human, he is half Youmu and invulnerable to wounds because he can heal quickly. One day, Akihito meets freshman Mirai Kuriyama when it seems she is about to jump from the school rooftop. Mirai is isolated because of her ability to manipulate blood, which is considered heresy among members of the spirit world. Disturbing events begin to unfold after Akihito saves Mirai.
Themes
Episodes
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- E1 CarmineNext upOct 2, 2013 · 24 min · ★ 8.0
Synopsis

When Akihito sees a girl about to jump off the school roof, he surprises even himself as he races up the stairs to rescue her. Much to his surprise, the girl he saved is a Spirit World Warrior. And as a half-youmu, he’s now her prey!
Guest stars: Kunihiro Maeda (Akihito's Friend (voice)), Saki Ono (Waitress (voice)), Sawako Hata (Announcement (voice)), Takuya Masumoto (Bento Shop (voice))
- E2 UltramarineOct 9, 2013 · 24 min · ★ 7.7
Synopsis

Akihito helps Mirai defeat one of her very first youmu! He tries to use this as his chance to become closer, but instead Mirai seems to be pushing him away! Why won’t his bespectacled beauty join the Literary Club?
Guest stars: Hironobu Hatakeyama (Schoolboy (voice)), Yuma Uchida (Schoolboy (voice)), Sawako Hata (Schoolgirl (voice)), Miki Hase (Schoolgirl (voice))
- E3 Moonlight PurpleOct 16, 2013 · 24 min · ★ 7.7
Synopsis

The Hollow Shadow is drawing near. Akihito knows that Mirai wants to risk her life in a fight against the powerful youmu. The only way to stop her is to learn more about her past and confront her, but she’s been avoiding him...
Guest stars: Sayuri Yahagi (Yui Inami (voice)), Junichi Yanagita (Schoolboy (voice)), Sawako Hata (Servant of Nase Family (voice))
- E4 Bitter OrangeOct 23, 2013 · 24 min · ★ 8.7
Synopsis

Mirai and Akihito must defeat the Hollow Shadow while dodging around Sakura. The youmu can not only possess people, but also create labyrinths based off their memories. If Mirai hopes to have a future, she will have to face her past!
Guest stars: Sayuri Yahagi (Yui Inami (voice)), Ikuya Sawaki (Grandfather Nase (voice))
- E5 Chartreuse LightOct 30, 2013 · 24 min · ★ 7.3
Synopsis

Mirai isn't allowed to hunt youmu for one month as punishment for going near the Hollow Shadow. Now she must get a part-time job to pay the bills. As Mirai comes out of her shell, perhaps she will heal the hearts of those around her...
Guest stars: Kunihiro Maeda (Clerk (voice)), Sawako Hata (Clerk (voice)), Sohta Arai (Teacher (voice))
- E6 Shocking PinkNov 6, 2013 · 24 min · ★ 7.7
Synopsis

Mirai goes after a perverted youmu with an eye for human girls. When it sprays Mitsuki with its stink juice, the Literary Club must band together to defeat the powerful--and horrendously stinky--youmu!
Guest stars: Miina Obata (Schoolgirl (voice)), Saaya Nakamura (Schoolgirl (voice)), Sawako Hata (Schoolgirl (voice))
- E7 Color of CloudsNov 13, 2013 · 24 min · ★ 7.7
Synopsis

At long last, Sakura is ready to confront Mirai. Now Mirai must decide whether she will fight to live or die for atonement. What would Yui want for Sakura... and for Mirai?
Guest stars: Sayuri Yahagi (Yui Inami (voice)), Shinya Takahashi (Teacher (voice))
- E8 Calming GoldNov 20, 2013 · 24 min · ★ 7.7
Synopsis

The Calm is coming. This is a dangerous time for youmu since it is when their powers grow weak. But what does that mean for the ultra-rare half-youmu, Akihito? And Miroku seems to be up to something. What does he have up his sleeve?
Guest stars: May Tanaka (Akihito Kanbara (child) (voice)), Ikuya Sawaki (Grandfather Nase (voice)), Teruyuki Tanzawa (Announcement (voice)), Yuma Uchida (Schoolboy (voice)), Sawako Hata (Servant of Nase Family (voice))
- E9 Silver BambooNov 27, 2013 · 24 min · ★ 7.5
Synopsis

According to Izumi, Akihito’s youmu transformation could be permanent! She tells Mirai that she must kill Akihito during the Calm or else he will become a powerful youmu gifted with immortality. Mirai is torn by the decision she must make.
Guest stars: Ikuya Sawaki (Grandfather Nase (voice))
- E10 White WorldDec 4, 2013 · 24 min · ★ 8.3
Synopsis

In a dream, Mirai informs Akihito of what happened during their battle and why it had to be this way. Then time jumps backwards to six months earlier. At long last, Mirai’s motives and Izumi’s plan are made clear!
Guest stars: Ikuya Sawaki (Grandfather Nase (voice))
- E11 Black WorldDec 11, 2013 · 24 min · ★ 8.0
Synopsis

Akihito is beside himself when he learns that Mirai has vanished. It doesn’t help that something in town seems off, either. Akihito keeps hearing a strange sound coming from the sky that no one else can hear. Could something be up there?
- E12 Gray WorldDec 18, 2013 · 24 min · ★ 8.3
Synopsis

Now that Akihito and Mirai have been reunited, they must work together to defeat Beyond the Boundary’s core. But what will happen to Mirai and Akihito once it has been defeated...? Will either of them survive?
Guest stars: Ikuya Sawaki (Grandfather Nase (voice)), Sawako Hata (Child (voice))
Cast & crew
KENNAkihito Kanbara (voice)
Risa TanedaMirai Kuriyama (voice)
Ayako KawasumiIzumi Nase (voice)
Yuri YamaokaAi Shindou (voice)
Moe ToyotaSakura Inami (voice)
Minori ChiharaMitsuki Nase (voice)
Masaya MatsukazeMiroku Fujima (voice)
Naomi ShindoAyaka Shindou (voice)
Hiromi KonnoYayoi Kanbara (voice)
Akeno WatanabeShizuku Ninomiya (voice)
Tatsuhisa SuzukiHiroomi Nase (voice)
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