Complex sentence: Choi Young brings Eun-soo to the portal before it closes so that she can travel back and bid farewells to her loved ones and join Choi Young permanently, Ki Chul attacked them and Choi Young suffers a life-threatening wound.
Split into simpler sentences: Choi Young brings Eun-soo to the portal before it closes so that she can travel back and bid farewell to her loved ones and join Choi Young permanently. Ki-chul attacked them and Choi Young suffers a life-threatening wound.