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Context

Kotetsu Sudou is a supporting character appearing in Free! Dive to the Future.

He is one of the university-level swimmers introduced during the later stages of the series, representing the younger generation of competitive athletes.

He often appears during practice sessions or competitions, symbolizing passion and determination.

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Biography

Kotetsu Sudou (須藤 虎徹) is a skilled freestyle swimmer known for his energetic presence and natural athleticism.

Though not a central character, his role reflects the wider world of swimming beyond the main cast — ambitious young athletes inspired by Haruka and Rin’s dedication.

In The Final Stroke, he’s seen among the professional and semi-professional swimmers, showing that the spirit of competition continues across generations.

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