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There are also S-rank missions, the highest paying and most dangerous type of mission a ninja can go on. These missions are exclusively assigned to highly skilled jōnin or large squads of ninja. S-rank missions pay at least 1,000,000 ryō.
"S-rank" is also a designation given to extremely powerful missing-nin, earning them a place in their village of origin's Bingo Book. Each member of Akatsuki is an S-rank criminal. Fans of the series will sometimes classify powerful ninja who are still loyal to their village as S-rank, such as the Sannin or other Kage-level characters, but this is arbitrary.