Mutsu
One of Sakura Empire's "Big Seven," Mutsu is best known as Nagato's younger sister. She's got a cheerful, curious personality that contrasts with her more reserved sibling—she's openly envious of Nagato's shy nature, though she worries about her constantly.
Azur Lane
Mutsu shows up briefly in episodes 4, 9, and 12, though she doesn't have any voiced lines in these appearances.
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