蝦夷鰰: Pacific sandfish

an island prefecture on the northern part of Japan; its capital city is 札幌 (Sapporo)

a sea, an ocean / a lake / (figuratively) an object covering over a large area, as in 血の海 (chi no umi, “pool of blood”) or 火の海 (hi no umi, “sea of fire”)

魚: fish

(slang) Alternative form of よき (yoki)

余韻: reverberation; lingering flavor

(military) nighttime attack

葦月: a surname

imperative of よい (yoi); imperative of いい (ii)

(slang) Alternative form of よい or いい