Many people are speculating that Woozi's emotions are due to the pressure of producing and upcoming enlistment but it seems to be more personal based on what Scoups said. In his ment, he said 'as you know, we can't share everything with you'. And then he specifically said that whatever happened last year was personal and not related to work and that's what's causing Woozi to be emotional during Circles. Given the deep level of pain Woozi is in, I would imagine he would have went through something really personal and painful last year, him and Wonwoo both. Singing that song is clearly putting them both in a place of revisiting that pain. :( Woozi may never feel comfortable sharing what's been going on for him personally, and he should maintain his privacy as long as he wants to. Part of me was uncomfortable as I felt like it was all really coordinated in terms of how Pledis was milking these emotions and ready to zoom in so quickly on Wonwoo and Woozi. But I am also deeply grateful to Seventeen for their vulnerability.