He did it for the thrill. Ji-Su's death is undone by the end anyways when hes given a second chance.
True he will eventually die when his time comes. Now he has a chance to make better choices and make things right with his mom and Ji-Su. Its a bitter sweet ending. I wasn't expecting a fairy tale ending. I hope this shows cast gets awards for their roles. Especially Seo In Guk, Park So Dam and Go Youn Jung they did an amazing performance. .
He did it for the thrill. Ji-Su's death is undone by the end anyways when hes given a second chance.
My head canon is he will figure out why to save her or when he got his second chance her fate got changed. It doubt there will be a second season since he beat Death , This show was never about him taking down the bad guys but Death teaching him a lesson not to take life for granted
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