~Vた + せつな => moment, instant, juncture N1
Beyond expectations
からつくる/でつくる => made from; made with N4
させてくれる => Let me... N4
Allow
くせして => Even though A N2
Contrast,Surprise
に気がつく => to notice; to realize N4
くせに => and yet; though; in spite of; despite ~ N3
させておく => Leave it alone, don't interfere N2
Position, perspective
~みこみがたつ => have a good prospect N1
Expected
どことなく => Somewhere N2
Vague
させてください/させてもらえますか/させてもらえませんか => please let me do N3
そのくせ => and yet; though; in spite of; despite ~ N3
Surprised
くせして => Although; Despite the fact that; Even though ~ N2