The famous artist Ginko Kiyotani suffers a cerebral hemorrhage and has to undergo surgery. Afterwards, his old friend Mr. Kyogoku is worried that Kiyotani's mental abilities and memory have been affected. Kyogoku tells Yamaoka that the day Kiyotani collapsed, he told Kyogoku he wanted to cook "sea pine mushroom rice" for him and claimed it was better than using matsutake mushrooms.
日本画の大御所・清谷吟香は京極の喧嘩友達。京極の自慢の松茸に”海にもこれに劣らぬ物がある”と張り合う。初夏に、それをとろうと海に潜った吟香が脳内出血で倒れた。海のマツタケご飯とは何か？
