Reincarnated Me: Kill the Demon King's Bloodline with One Dollar

Start with reincarnation in another world. He turned out to be the good-for-nothing son of a down-and-out Duke! A useless start? Neither magic nor fighting spirit? It doesn't matter, wake up to the Krypton Gold Mall! Kill the devil's bloodline instantly with one dollar! "Ding! Congratulations to the host for killing the Demon King bloodline and successfully awakening the dark magic talent!" Kevin nodded, and then said a little disappointed: "I have the talent, but I don't have the magic book to learn magic." "Ding! Congratulations to the host for successfully killing the Book of Solomon at a half-price discount! The host can summon hell demons to fight!" Kevin nodded reluctantly: "I have the magic book, look, I still need a pet..." "Ding! Clearance sale, all seven demon gods are on sale at a discount! Lucifer, Beelzebub, Leviathan... All are on clearance sale!" The corner of Kevin's mouth rose: "Mall, look, I still need a girlfriend. Is there any one-dollar girlfriend-killing event..." "Ding! Host, don't be too... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.