Foreshadowing
noun
Connect a bunch of things laying in a line. Something's happening here. You can't put your finger on it, but you're pretty sure this is foreshadowing for something else.
ふくせん
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
伏線の張り方がすごい。
This method of foreshadowing is amazing.