close friend, bosom buddy / crony, chum

会津, 相津: A region in western Fukushima Prefecture, Japan.

(archaeology) shell mound; shell midden

外伝: biographical supplement; side story / 外電: a dispatch from a foreign news agency

遺伝子: gene

井手: (archaic) A dam used to divert water for irrigation.

Come! (used to verbally urge the addressee when calling them closer)

井手: a surname

(Classical Japanese) Attaches to the 未然形 (mizenkei, “irrealis or incomplete form”) of verbs to form the negative conjunctive, equivalent to modern ないで (-naide).

(chiefly women's speech) first person singular pronoun: I, me