Aoi is the third of four sisters and Akane's twin. She's known for being shy and delicate—basically the most traditionally feminine of the bunch. Sewing is her main hobby, and she's really into sweets, cute clothes, and dolls.
She's genuinely kind to a fault. Fans often note that she's almost impossibly virtuous, which sounds great until you realize she also tends to blame herself for everything that goes wrong. She'll drop what she's doing to help anyone in trouble, which is admirable but also kind of sad because she clearly doesn't think much of herself. There's a real disconnect between how good she actually is and how little credit she gives herself.
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