すし: muscle, tendon, sinew; vein, artery; fiber, fibre, string; line, stripe, streak; reason, logic; plot, storyline; lineage, descent; school (e.g. of scholarship or arts); aptitude, talent; source (of information, etc.), circle, channel; well-informed person (in a transaction); logical move (in go, shogi, etc.); ninth vertical line (shogi); seam on a helmet; gristly fish paste (made of muscle, tendons, skin, etc.); social position, status; on (a river, road, etc.), along; counter for long thin things, counter for roads or blocks when giving directions; (Edo period) counter for hundreds of mon (obsolete unit of currency)
Mean: The action of the story takes place on an island.