And not to mention if that charm would had been publicized widely known, it would had resulted nobody wanting become akuma for 'more power' as solars can get that 'more power' without selling their souls for it. Leaving only sids and DB's as akuma and they were less influential in height of first age where solars ruled.<br/><br/>But then again the first akuma did not sell himself because he wanted power but believed that his fellow solars were wrong and bad guys (nor Malfeas expecting one their best yozi serving solar agents who was very manipulative night caste would become unsubtle brute and die soon as he became akuma).