Seven Sins System cover

Mature Ongoing

Seven Sins System

by Nanakawaichan

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Chapters: 510

Latest chapter Chapter 509. Hazemoon’s Mansion I Jun 01, 2026

Fantasy Action Comedy Harem Slice of life Mystery Mature Smut Ecchi Mature Ongoing

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Synopsis

"Ionlyacceptanequivalenttrade.Awishforawish.Bodyorsoul,whichonewillyougiveme?"...Readmore

"Ionlyacceptanequivalenttrade.Awishforawish.Bodyorsoul,whichonewillyougiveme?"Itwasthesameoffereverytimeamortalsummonedhim,thecrownprinceoftheshadowrealmandthelordofwrath,AzraelShadowravendeNightfall.Thedemonsbowedtheirheadstohim.Allcreatures,mortals,andevenangelsfearedhim.However,everythingchangedafterhewassentforasecretmissioninthemortalrealmtoexpandhissevensinspower.Hidinghisidentityamongthemortals,thevampireswereattractedbyhisroyalblood.Themortalswereeitherjealousoradmiredhisabilities.Theangelswerecuriousabouthim.Thedemonswantedtokillhimandtakeoverhispower.Littledidheknow,hehadanotherhiddenpowersealedinsideofhim.Somethingterrifyingthatcouldturnhimeitherintotherulerofthethreerealmsoranevilthatcoulddestroyallbeings.--------------*Mostofmystoryhasabigharem,I'mnotinterestedinwritingasmallharemwithonlytwoorthreegirls.TheMCdoesn'ttreathiswomanasasexobject.Non-consensualrelationshipalsonotmything.Tags:MatureContent,R-18,Smut,Comedy,Tentacles,MonsterGirls,Yandere,Succubus,Magic,Demons,Angels,Hybrid,HidingIdentity,Goddess,Devil,BattleAcademy,Beasts,Action,Mystery,Overpowered,StrongtoStronger,Harem,System,Servants,HandsomeMaleLead,SmartMaleLeadandalittlebitofSliceofLife.Collapse

Angels,AntiheroProtagonist,BattleAcademy,DemonLord,Demons,HandsomeMaleLead,HidingTrueIdentity,Master-ServantRelationship,OverpoweredProtagonist,R-18,StrongtoStronger,Tentacles,Vampires,Yandere,LitRPG,Smut,MonsterGirls,Succubus,Magic,HidingIdentity,Goddess,Devils,Beasts,Overpowered,Harem,System,Servants,CleverProtagonist,WeaktoStrong

ItsaysIreadthisupuntilch.17butionremembercansomeonegivemeabriefdescriptionofwhatit’sabout.?

Theauthorsgotaseriousobsessionwithtentacles....theyareprettyversatile

Culturalpioneers?

Theauthorwantedanimperialharem

Chapters 510

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Seven Sins System

Author: Nanakawaichan

"Ionlyacceptanequivalenttrade.Awishforawish.Bodyorsoul,whichonewillyougiveme?"...Readmore "Ionlyacceptanequivalenttrade.Awishforawish.Bodyorsoul,whichonewillyougiveme?"Itwasthesameoffereverytimeamortalsummonedhim,thecrownprinceoftheshadowrealmandthelordofwrath,AzraelShadowravendeNightfall.Thedemonsbowedtheirheadstohim.Allcreatures,mortals,andevenangelsfearedhim.However,everythingchangedafterhewassentforasecretmissioninthemortalrealmtoexpandhissevensinspower.Hidinghisidentityamongthemortals,thevampireswereattractedbyhisroyalblood.Themortalswereeitherjealousoradmiredhisabilities.Theangelswerecuriousabouthim.Thedemonswantedtokillhimandtakeoverhispower.Littledidheknow,hehadanotherhiddenpowersealedinsideofhim.Somethingterrifyingthatcouldturnhimeitherintotherulerofthethreerealmsoranevilthatcoulddestroyallbeings.--------------*Mostofmystoryhasabigharem,I'mnotinterestedinwritingasmallharemwithonlytwoorthreegirls.TheMCdoesn'ttreathiswomanasasexobject.Non-consensualrelationshipalsonotmything.Tags:MatureContent,R-18,Smut,Comedy,Tentacles,MonsterGirls,Yandere,Succubus,Magic,Demons,Angels,Hybrid,HidingIdentity,Goddess,Devil,BattleAcademy,Beasts,Action,Mystery,Overpowered,StrongtoStronger,Harem,System,Servants,HandsomeMaleLead,SmartMaleLeadandalittlebitofSliceofLife.Collapse Angels,AntiheroProtagonist,BattleAcademy,DemonLord,Demons,HandsomeMaleLead,HidingTrueIdentity,Master-ServantRelationship,OverpoweredProtagonist,R-18,StrongtoStronger,Tentacles,Vampires,Yandere,LitRPG,Smut,MonsterGirls,Succubus,Magic,HidingIdentity,Goddess,Devils,Beasts,Overpowered,Harem,System,Servants,CleverProtagonist,WeaktoStrong ItsaysIreadthisupuntilch.17butionremembercansomeonegivemeabriefdescriptionofwhatit’sabout.? Theauthorsgotaseriousobsessionwithtentacles....theyareprettyversatile Culturalpioneers? Theauthorwantedanimperialharem

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