Remember, what you do now will come back to you in the future. Life has a funny way of making you deal with what you make others go through. If you genuinely love someone don't ever decorate their eyes with tears, their ears with lies, and their heart with a wound.
Simpler wording/defining,
I think it might be “It introduces the story and sets up the coming events.” I’m not sure so take this with a grain of salt...
He shipped 82 that’s the answer band he seller in the market