Start with the seasonal atmosphere, not just the species name
These seasonal pages are built around mood as much as ingredient. Spring is softer and brighter. Summer is about water, stamina, and relief. Autumn is fish with smoke and memory around it. Winter is the season when the table grows serious and the steam rises.
So this section is not only about what is in season. It is also about what kind of conversation a fish creates, what kind of room it belongs in, what kind of light surrounds it, and why that matters so much in Japan. Firefly squid and first bonito belong to spring. Ayu and eel belong to summer. Pacific saury belongs to autumn. Yellowtail, cod, fugu, and crab belong to winter. But behind every one of those is a larger seasonal feeling.