Noya Hienma

Noya 「ノ夜, lit. ???」 is a high-ranked demon of the Black Demon Series. He forms a contract with Guren Ichinose in Seraph of the End: Guren Ichinose: Catastrophe at Sixteen and becomes his weapon.

Appearance
Noya is described as a beautiful 12-year-old boy with milk-white skin, scarlet hair, scarlet eyes, and a pair of horns sprouting from his hair.

As a weapon, he takes the form of a katana.

Personality
This demon is playful and mocking. He repeatedly calls Guren "cute" and enjoys tempting him with desire and power. He teases Guren with a countdown and says that Guren will become a demon soon enough anyway.

History
A cursed gear weapon developed and used by Mahiru Hiragi.

Story
Mahiru prepares Noya for Guren's use.

Out of desperation, Guren touches the demon sword Noya in the prologue of Catastrophe volume 4.

Guren hears a voice calling his name and awakens in a completely white space in his heart. The demon Noya tempts him with power and approaches him. He chats about Mahiru and says that Guren will turn into a demon regardless of whether he accepts that power or not. Guren touches Noya and willingly gives up his humanity, leading Noya to mock him for making the wrong choice. He says it is unacceptable for a human to give up on his humanity while he is still human. Everything goes black, and power overwhelms him.

Guren wakes up with the sword in his and a motorcycle next to him. He hears war going on all around him but no longer feels any pity or empathy. His desires encourage him only to kill, and he mutters about needing a sheath to suppress the demon's will before getting onto the motorcycle.

Forms and Abilities

 * Demon's Thrall: Noya can enter it host's dreams and memories to create nightmares and break his host's will in order to take over his body.
 * Basic Form: Noya takes the form of a sword.

Book 4

 * A voice spoke in the darkness. "Hello, Guren."—To Guren, Chapter 1
 * "'Hijack' makes it sound like I’m doing something wrong. I’m here because you wanted me, Guren."—To Guren, Chapter 1
 * "It makes me very happy that you want me," the demon said, smiling. "You desire power, don’t you?  You couldn’t have chosen better than me ♪ Once we get inside each other, you’ll be stronger than you could have ever imagined." The demon took a step forward.  Inky blackness spread beneath his foot. "…" As the blackness spread, Guren had the sense that something precious in him had disappeared.—To Guren, Chapter 1
 * "Oh? But we’re going to be so close.  We’re going to be together for the rest of our lives.  You should say my name, too.  It’s Noya.  Go on, say it.  Speak my name, and I’ll give you a night of overwhelming carnal pleasure."—To Guren, Chapter 1
 * "Guren," he said. "Look at me.  Look at how close I am.  But I want the last inch to come from you, Guren…  Want me, Guren.  Hold me.  Give your mind and body over to me.  Then… you’ll be able to protect them all."  The demon smiled sardonically. Guren felt the words’ seductive pull.—To Guren, Chapter 1
 * "Well? Are you just going to run away again?  Say that you’re not prepared to make your move yet?  That the timing isn’t right?  I like humans who’re like that, too.  The kind who can run away shamelessly when it’s their own skin on the line.  But you’re different, aren’t you, Guren?  I already heard that you were different."—To Guren, Chapter 1
 * "You’re just so lost, and gentle, and weak, that it’s hard not to love you. Once we join together, our strength will be unstoppable! …There’s no need for us to hurry, though.  It will happen sooner or later.  You’ll become a demon.  Even if you don’t touch me today, you’ll reach out for me eventually…  They’ll all be killed, because you weren’t able to protect them…  And then you’ll turn into a demon out of absolute despair.  That suits me fine.  Either way, it’s too late to stop.  You can’t help but turn into a demon.  We’re already intertwined."—To Guren, Chapter 1
 * "Aha, Guren!" Noya shouted in rapture. "Wrong choice ♪ You’d think it would be obvious, but humans should never give up their humanity?  You really didn’t know that?  You’re so adorable!" Guren’s eyes widened in surprise. But it was too late. Blackness. Everything went dark. And relentless power surged into his soul.—To Guren, Chapter 1
 * --Next, let’s save Mito, Noya said. What will you do if they’ve raped her?  I bet it would feel good to punish the rapists?  How about if she’s been killed?  I bet it would feel good to avenge her.  There’s so much fun to be had in the human world!  I can’t wait until you and I are one, and I can finally be set loose!—To Guren, Chapter 2
 * "Really?  But I thought you were the loner.  I mean, you’ve never believed in anyone.  That’s why you sought me out.  Because no one else would help you."—To Guren, Chapter 4