- Bonus Material: There is quite an extensive amount. There's a gag 4-koma manga spin-off, a regular Q&A with the author submitted through twitter, three prequel light novel series, drama CDs, and character blurbs at the end of volumes! The light novels in particular fill in a lot of holes in the manga and anime that go unexplained.
- Casting Gag: This isn't the first time that Takahiro Sakurai has played a vampire.
- God Never Said That: There are frequent claims that the fanbook "confirmed" Mika has a crush on Yu. In reality, this is never stated.
- Takaya Kagami also did not compare Yu and Mika to Romeo and Juliet (that was a quote from the anime's producer, Kagami actually compared Guren and Mahiru to R&J). Despite this, the quote is very frequently cited to have been from him.
- Relationship Voice Actor:
- This isn't the first time Guren and Mahiru have been together.
- Mika and Narumi were Basketball Best Buds and Rivals.
- Mika and Guren were brothers and princes' of an Empire. Note that Mika as Hakuryuu Ren, Narumi as Masrur, Guren as Kouen Ren, Rika as Aladdin and Goshi as Sinbad.
- Yu and Mika have a predecessor/successor relationship in the Yu-Gi-Oh!! series as Yu voiced the co-protagonist of the previous series and Mika voices the main protagonist of the current one.
- It shares quite a few seiyuu with Attack on Titan. Mito as Annie, Shigure as Mikasa, Goshi as Erwin and Narumi as Reiner.
- It even shares a few seiyuu with One-Punch Man. Krul as Tatsumaki, Guren as Mumen Rider, Shinoa as Fubuki, Narumi as Iairon and Kimizuki as Genos.
- It shares some seiyuu with Fairy Tail. Guren is Gray, Shinoa is Kagura, Ferid is Sting and Crowley is Rogue while Mitsuba is Sherry.
- Guren, Yoichi, Narumi, Kimizuki and Yu played volleyball in another world.
- It also shares a few seiyuu with Sonic the Hedgehog. Krul as Sticks and Goshi as Silver.
- Yūichirō, Ferid, Crowley and Mika are each male leads from Square Enix RPG games.
- Kimizuki, Mika and Yoichi are Seiya,Hyoga and Shun.
- Yoichi and Kimizuki are Bakugou and Iida.
- Seishirō as Present Mic.
- Kureto, Kagiyama and Aihara are Kyo, Iori and Zarina.
- Goshi vs. Lucal Wesker (even thought it never really happened) no doubt = Joutarou vs. Dio; bonus points for Koyasu being cast as yet ANOTHER vampire.
- The Wiki Rule: Owari no Seraph Wiki
Trivia / Seraph of the End