DIA's Chaeyeon can't hold back her tears at the group's comeback showcase for "Happy Ending" today which is held at Lotte Card Art Center Art Hall, Mapo-gu, Seoul.

During the showcase, Chaeyeon expresses her thoughts about rejoining DIA after her promotions as I.O.I member. She shares, "Because I joined DIA after I.O.I promotions, I wasn't able to practice as much as the other members. But they help me a lot and we practice hard together. I am grateful that we are able to do this meaningful album which we pour a lot of affection to."

The girls comfort her and Chaeyeon starts to tear up. She continues, "I've got a lot of worries. I feel how precious the people are around me. Thank you for the supportive words you've given me. To the members as well, thank you for understanding me. I think I've become even more determined."

Meanwhile, DIA will promote their song "Happy Ending" or music programs so anticipate their comeback stages!