Red Velvet's Wendy and Joy appeared on the YouTube channel '새고_F5-Duck Rice House' operated by Super Junior's Choi Siwon. The two members, who have returned as a complete group after about 2 years and 2 months, introduced their new song 'Cosmic' and the B-side track 'Surfing Boy,' in which Joy participated in songwriting. In a cooking competition, Wendy prepared cold noodles using spicy chicken sauce, while Joy made miso soup, showcasing their culinary skills. The spotlight was particularly on Red Velvet's distinctive teamwork as they entered their 12th year, with members dividing roles in idea generation and practical coordination. They recalled how they moved from strict hierarchy at debut to naturally using informal speech after maknae Yeri joined, breaking down psychological barriers. Joy shared warm memories of birthday seaweed soup prepared by Irene and Wendy, and Su-kyu's homemade sujebi. Wendy praised Joy's consistent consideration for others. Both members expressed their goal of bringing comfort and joy to fans through their upcoming activities.