Restarting the Life of the Loser Princess

Her Royal Highness the Princess became the Queen somehow... Her Royal Highness the Princess was beheaded for no apparent reason... Her Royal Highness the Princess was inexplicably reborn as a 6-year-old... Her Royal Highness the Princess Level 999... This time Her Royal Highness is going to kill everyone! Who said that only heroes can restart their lives? ! Adapted From : 廢柴公主LV999 (Wasteful Princess Level 999)