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Seven Sins System Original

Seven Sins System

Fantasy 280 Chapters 1.5M Views
Author: Nanakawaichan

4.79 (28 ratings)

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Synopsis

Warning: Mature content, R18, Harem, No NTR, No Rape

"I only accept an equivalent trade. A wish for a wish. Body or soul, which one will you give me?" It was the same offer every time a mortal summoned him, the crown prince of the shadow realm and the lord of wrath, Azrael Shadowraven de Nightfall.

The demons bowed their heads to him. All creatures, mortals, and even angels feared him. However, everything changed after he was sent for a secret mission in the mortal realm to expand his seven sins power.

Hiding his identity among the mortals, the vampires were attracted by his royal blood. The mortals were either jealous or admired his abilities. The angels were curious about him. The demons wanted to kill him and take over his power.

Little did he know, he had another hidden power sealed inside of him. Something terrifying that could turn him either into the ruler of the three realms or an evil that could destroy all beings.

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*Most of my story has a big harem, I'm not interested in writing a small harem with only two or three girls. The MC doesn't treat his woman as a sex object. Non-consensual relationship also not my thing.

Tags: Mature Content , R-18 , Smut , Incest, Comedy , Tentacles, Monster Girls , Yandere , Succubus , Magic , Demons , Angels , Hybrid , Hiding Identity, Goddess , Devil , Battle Academy , Beasts , Action , Mystery , Overpowered , Strong to Stronger , Harem , System , Servants , Handsome Male Lead , Smart Male Lead and a little bit of Slice of Life.

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Other works:
*The Incubus System
*Dragon King's Harem
*Dark Moon: Rise of The Dark King
*Demon Lord's Succubus (Completed)
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Cover by commission from Deviantart
My Discord: https://discord.gg/mSRHyMVhnG

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28Reviews

4.79

  • Translation Quality
  • Stability of Updates
  • Story Development
  • Character Design
  • World Background

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GoD_SovereignJ

Another work. I believe this novel packs terrifying potential. I'll just be hoping for something, which actually is that: more chapters, please! Also, with respect to all other works as well as this one, thanks so much for making my day as always!

2yr
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dnax21

It's been going well till now, the mc is ruthless by human standards but his attitude to murdering or cleaning bodies up is normal to the demon realm... i forgot the realm's name but anyway he has also shown to be considerate and who knows(excluding nana)he might try to understand mortal feelings and stuff. Can't say much about the stability since it has only started. For me, the writing is quality is great. PS: the best thing about this novel is that Barry(the alternative version of Larry from tis in the novel)is gonna have a girlfriend and no it's not a body pillow, he is actually gonna get a real girlfriend. Well jokes aside, bye.

2yr
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Keith_Pierce

10/5 would recommend! In all seriousness though so far it is a great story. It has little to no grammatical errors and the author does give actual information on the skills the Mc currently has. At the time of writing there hasn't been much world building as of yet but it is building up a good foundation for it to be built upon. Nana-chan is a good writer and does her best to deliver quality stories to her readers and makes you feel as if you are actually watching over the characters. With that said you do feel your emotions being directed at the characters and not at the author herself.

2yr
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Nanakawaichan

I'm going to take 10th review~ Thank you for your support for my new book. This is my first time entering a writing competition and I have to say I'm a little nervous. This time, I took genre system harem genre (as always) and modern era. Slightly similar to my previous novel. This is also the first time I've written a tentacled MC *Cough* (Don't judge me). So anything can happen in this story. I hope you enjoy this book~

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2yr
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Daoist_Culture

Hello. Is there any kind of yuri here? I hate that stuff and would like to know before reading. thanks

8mth
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Melshan

HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM HAREM

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1yr
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R_U_FOR_REAL

Beware_of_Demon_Lord 😈😈😈😈😈😎😍

2yr
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Fuck_her

Awesome author🥰🥰🥰🥰

2yr
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Cenia_Candra

My friend told me about this story. I thought it sounded interesting so I tried it. I got hooked instantly. Personally, I find the storytelling absolutely amazing. I believe that this is an amazing story. The MC is a devil. A little ruthless by human standards but he's not a coldblooded character who kills for no reason. Overall, I'm glad this is the first book I found in this place. Keep it up.

2yr
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Gigi_Saga

I read the early chapters of this novel and immedietly drawn in. The premise if very promising as it explores human desires.It was beautifully written with several layers of mystery. But the cover got my attention.

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1yr
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ShuviLily

Nana <3 I love this author's work from the other site, I never expected she will upload a new novel to this site! The story has been fantastic so far. There is character development, moral issues, family issues, and a plot that is much bigger than you may have initially thought. I could know at least that much from her previous work, so you must check this one out!

2yr
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Tempest3600

Firstly, the story is interesting and we feel the author put a lot of efforts to create a complex and complete world. The characters are not yet well developped, BUT this is because there is not yet enough material to do so (only 16 chapters at the moment), and we can see there will be character developments soon in the future. The MC is OP but restricted with the use of his power, which will give a good development of the story. Secondly, the author has a good writing, english is not my first language but I can see there is not (or very little) gramatical/spelling/conjugation error. So I really recommend to read this story if this is the kind you like (of course everyone has their own tastes)

2yr
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anna_kanina

So far so good! Actually system' novel is not really my thing. But the author make it easy to follow and understand. I really enjoy ur writing and already read all the published chapter (Chp 14). Can't waiting for read more.

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2yr
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Pedro_Sousa

A new work from Nana, so great thing to be expected here. Nice and concise development and immersive world building, that will just suck you in. Can’t wait for more chapter. ;D

2yr
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Cokabil_tw

Good luck , keep it up with the good work nana , always a pleasure to read another story of yours , still you need to focuse on some writing improvements , overall , all good :3

2yr
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DEADLYSHADOW

The story started well. I think this story will be really good as I am already reading other stories of Nana. I hope you continue like this. I hope the upload frequency will increase.

2yr
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RoyalynDixon

This story has SO much potential. Especially as a hârem with a great plot to support it, really a rare gem where härem is enjoyable for any female readers out there too. It’s worth the read since there’s no NTR, no r/, and everything is based on mutual feelings, trust, & respect rather than having a “collection”. None of the women in the härem feel like the “same type” or written horribly for the sake of satisfying the desire for smût (main reasons why I hate hârem stories). There’s variety in appearance, personalities, and in the way they support MC. They have opinions and try to resolve things as partners rather than “obeying” to whatever MC wants with no voice of their own. This feels more realistic when it comes to relationships. Long review: Writing Quality - The writing quality has definitely improved since Nanakawaichan began her writing journey with DLS then TIS. Since English isn’t her first language, there are still amateur mistakes here and there that makes the reading a bit awkward. Nothing that can’t be overlooked at times. I’m very impressed and very happy to see her put so much effort into her writing because I absolutely love her works. She has improved with the story pacing (in TIS, the pacing was a bit fast so the romantic development between MC and his härem didn’t feel 100% genuine). Meanwhile in SSS, there’s ample time for the love interests to develop feelings for the MC. Good job on that! Story Development - This is her writing’s strongest point. Even if her writing style is lacking in some areas, her story development more than makes up for it in my honest opinion. The suspense, mystery, anticipation, excitement, everything lights a spark and Nana-chan uses it so perfectly that it’s terrifying. I keep coming back for more since it’s so original and leaves a long lasting impression. I went a long while without reading her works and I can still remember important things as if I read it yesterday. To my taste, I wish the pacing could be a bit better, but that’s just a minor thing. Nana-chan has me hooked! Keep it up ♥️ Character Design - Character design is another strength of Nana-chan! Their personalities really come through with the dialogue which isn’t always easy to do. We get insight on their thoughts & feelings when we need the insight. The only complaint (again, just my preference) is that we don’t get background on the characters like we did in TIS and TDKHS. We do have snippets on Julia. But then there’s none on the characters surrounding the MC. I’m sure other people don’t care, especially if it doesn’t serve any purpose to the plot itself. But I like connecting/to comprehend characters at a deeper level. The reason for being who/what they are. Other than that, everything is really good! None of the characters feel one dimensional/hallow/just there to be there. World Background - Let me say this, Nana-chan’s imagination & creativity when it comes to world building is AMAZING. It’s one of the main reasons why this story has TREMENDOUS potential with the proper guidance. There’s so much to explore and so much we have to know, it’s exciting to think what else will be introduced in the story. I hope Nana-chan gains more recognition and continues to share her great stories here. I’m here to read them all ♥️♥️♥️♥️

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1yr
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DaoistKLskQX

KEEP UP THE GOOD WORK AUTHOR, PLEASE DONT DROP THIS WEB NOVEL AND WE NEED MORE CHAPTERS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1yr
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Author Nanakawaichan