Choi Minho visits the hospital ward where Oh Soo Mi is staying. He sent her to this hospital before he planned to lure Sei into a trap in his house. Since she died from heart disease in the original timeline, he wants to make sure that the same doesn't happen this time. If she finds out the truth, she might ramble about how she wants to go.
"You caught that thing?" Oh Soo-Mi turns her head toward him.
"With Hyung's and Noona's help, I was able to send him away from our life." Choi Minho tells her, "The doctor found some problem with your heart. If you take medication regularly, it will be fine after some time."
"I can sense that the future has changed," Oh Soo-Mi raises her head, mumbling to herself. "You also dragged me to the hospital suddenly. Did you talk to some reaper?"