Am I the only one who is delightfully surprised by the fact that the Ninth's Guardians can produce Dying Will Flames from their rings and use them to fight? Still remember back before the Future arc? Barely anyone knew they could light those rings up with fire, forget about learning how to fight with those. Even so, shouldn't they have pass down their Vongola Rings to the tenth generation? I thought Mafia rings which are capable of producing flames weren't so common in the present, because of limited knowledge and information?