The show is called "Hello Counselor" but they appeared on different episodes. Sejeong has appeared on multiple episodes, but this is the one from the picture ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-LKKY4Rs-JTQ.html and this is Sehun's episode ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DA84llq7zA4.html