at any time

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

to grumble (about something trivial)

there are no words to describe it

木炭紙: charcoal paper

実相: reality, the real state of affairs / 実装: an actual installation

実装: to actually install something

mutually, reciprocally, to one another / Alternative form of っこない: in no way, certainly not

っ子: child of, typical resident of

(dialectal) Contraction of 父ちゃん (tō-chan, “daddy”).