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Illustrated portrait of Sonoko

A character in Confessions of a Mask

Sonoko

The young woman Kochan courts, whose genuine affection becomes his strongest test of a conventional future.

The book

Cover of Confessions of a Mask by Yukio Mishima
Confessions of a MaskYukio Mishima, 1949

A young man performs the life expected of him and hopes the performance will eventually become real.

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Who they are in the book

Spoiler-free

Sonoko is Kusano's sister and the young woman Kochan nearly marries. Her gentleness and affection matter to him, but they cannot create the sexual desire he is trying to prove.

She represents a recognizable future of courtship, marriage, and social acceptance while remaining a person whose feelings are affected by Kochan's experiment.

How the book draws them

Appearance, manner, and tone — as the book sketches them, in our words.

  • PeriodHer neat 1940s dress places her within wartime and postwar Japan.
  • MannerA soft, open expression contrasts with Kochan's guarded intensity.
  • RelationshipHer attachment to Kochan is emotionally sincere.
  • Social meaningMarriage to her would confirm the identity Kochan hopes to perform.
  • Dramatic functionShe tests whether tenderness can substitute for erotic desire.
  • Emotional weightThe ending preserves her importance even as it reveals the limit of the relationship.
What becomes of Sonoko and KochanHow the book leaves them, what happened after, and what the record says. Open when you're ready.

Kochan retreats when marriage becomes realistic. Sonoko marries another man, and their postwar meetings cannot resolve his underlying conflict.

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