This sweater was spun and knit by a Japanese blogger, musktenjin0715.
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It looks like an Elizabeth Zimmerman pattern, but this one was designed by Naganasu of Witch's Knitting Room. Using top-down knitting, Naganasu employed short rows to have a deeper neckline in front. See comparison in this photo.
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The pattern is written in Japanese AND English (Yay!) The patterns are in two versions: Short Row and Simple
By the way, Musktenjin's buttons were handmade.
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It looks like an Elizabeth Zimmerman pattern, but this one was designed by Naganasu of Witch's Knitting Room. Using top-down knitting, Naganasu employed short rows to have a deeper neckline in front. See comparison in this photo.

The pattern is written in Japanese AND English (Yay!) The patterns are in two versions: Short Row and Simple
By the way, Musktenjin's buttons were handmade.