The Deadly Dried Squid Technique

(from ebookjapan):

A man whose beloved wife is stolen by a former pro-wrestler who specializes in the "The Deadly Dried Squid Technique" feels despair when he sees her being raped in front of his eyes....

（The author goes fishing along the Nojiri River, a tributary of the Aizu Tadami River, but stays at an inn that is insensitive to the feelings of travelers... (Fishing Inn in Aizu)

*These works were published between 1979 and 1980.

Part of an anthology of short stories.