Synopsis

HumanitywaslivingpeacefullyonEarthformillionsandmillionsofyearsuntilthedayunknownmonstersfrombeyondspaceinvadedthem.Whenhumanswereabouttodisappear,somepeoplewithabilitiescameouttothelightandsharedtheirknowledgeandpowerswiththeworld,andtogether,theymanagedtopushbacktheinvadersduringaterriblewarthathadlastedforyears.Thiswarhadcreatedmanyorphans,andamongthem,Kyehadlosteverything,evenhisparents.Andtheonlythinghereceivedfromtheirdeathwasapale-lookingnecklace.However,oncethenecklacefinallyactivated,asystemwasgiventohim,andhislifechangedcompletely.Thesystemgavehimqueststodo,andKyecomplied.Hewasgettingstrongereverytimeheachievedthem,untilthedayitgavehimaweirdquest.[Youhaveonedaytokilltheonewhohadsinned.Ifyoudonotkill,youwilldie.]