[さいご, saigo] (n, adj-no) (1) last; end; conclusion; latest; most recent; (exp) (2) (after -tara form or -ta form followed by "ga") no sooner than; right after (often having negative consequences); (3) (arch) (See 最期) one's final moments; (P)#683
[いご, igo] (n-adv, n-t) (1) after this; from now on; hereafter; (2) (esp. after あれ, それ) thereafter; since (verb) (after -te form of verb); after (time); since (then); (P)#1768