Demonion: Gaiden

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Alternative Titles

Japanese: デモニオン ~外伝~


Type: OVA
Episodes: 2
Status: Finished Airing
Aired: Nov 21, 2014 to Mar 27, 2015
Producers: White Bear, Mediabank
Licensors: None found, add some
Studios: BreakBottle
Source: Visual novel
Genre: HentaiHentai
Duration: 20 min. per ep.
Rating: Rx - Hentai


Score: 6.471 (scored by 23602,360 users)
1 indicates a weighted score.
Ranked: N/A2
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #7606
Members: 6,798
Favorites: 11

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Ranked N/APopularity #7606Members 6,798
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Episodes: /2


There once was a maou Astaroth who invaded the human kingdom, plunging the world into war. However, he was finally suppressed by a group of heroes who took his powers and sealed him deep underground. Two hundred years later, there were rumours that the seal was broken due to the recent shifts in the Earth’s crust and that the maou had been revived. Many confident adventurers descended on Astaroth’s underground labyrinth with the intention of defeating him and becoming famous. Little did they know that he had set out a trap for them…

(Source: Omochikaeri)

Characters & Voice Actors


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Original Character Design


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Nov 23, 2014
Preliminary (1/2 eps)
[This is a hentai, not for children]

This is written after only having seen the first episode, which just came out.

I get the feeling that it's just gonna get better because of the vibe the first episode gave me. Kind of an odd way of putting it, but yeah. I hope this show turns out well.

Story 7/10

Looks promising, I'll admit it was a little stale, but I believe it will pick up in future episodes.



Recent News

Recent Forum Discussion

Poll: Demonion: Gaiden Episode 2 Discussion
Hentai - Mar 28, 2015
9 repliesby Da_Lastaw »»
Aug 17, 2016 12:38 AM
Poll: Demonion: Gaiden Episode 1 Discussion
ShanaFlame - Nov 23, 2014
11 repliesby hentaishima »»
Feb 21, 2015 8:38 PM
Demonion: Gaiden Episode 2 announced!
Largo93 - Feb 3, 2015
0 repliesby Largo93 »»
Feb 3, 2015 12:58 PM