Complex sentence: One morning, he sees a cute girl across the street who vanishes in a gust of wind and from this point, his peaceful life becomes anything but peaceful as ordinary, boring days suddenly take a turn into chaos.
Split into simpler sentences: One morning, he sees a cute girl across the street who vanishes in a gust of wind. From this point on, his peaceful life becomes anything but peaceful, as ordinary, boring days suddenly take a turn into chaos.