to be upset about something that cannot be changed
変えられないことにくよくよする (kaerarenai koto ni kuyokuyo suru)
"There’s no use crying over spilt milk."
"こぼれたミルクを嘆いても仕方がない。" (koboreta miruku o nageite mo shikata ga nai)
a small sign that something good might happen
To relax and not worry too much.
an ending that leaves the audience in suspense
to continue progress on something
to have a big, broad smile showing happiness
to do a lot of difficult or complicated things to achieve so...
