| Name | Period | Host |
|---|---|---|
| Liwo, Jozef Adam | Apr 24, 2019 ~ May 18, 2019 | Lee, Jooyoung |
| Im, Wonpil | Mar 13, 2019 ~ Mar 18, 2019 | Hyeon, Changbong |
| Gross, Steven Paul | Mar 10, 2019 ~ Mar 14, 2019 | Lee, Jooyoung |
| Kuwajima, Kunihiro | Mar 7, 2019 ~ Mar 20, 2019 | Lee, Jooyoung |
| Jhi, Seung-Hoon | Feb 18, 2019 ~ Feb 17, 2020 | Son, Young-Woo |
| Moon, Pilkyung | Feb 1, 2019 ~ Jan 31, 2020 | Son, Young-Woo |
| Im, Wonpil | Jan 3, 2019 ~ Jan 14, 2019 | Hyeon, Changbong |
| Song, Seok-Zun | Sep 1, 2018 ~ Aug 31, 2019 | Kim, Jeong Han |
| Nha, Hyunchul | Jul 4, 2018 ~ Aug 26, 2018 | Kim, Jaewan |
| Kosterlitz, John M. | Jun 20, 2018 ~ Jul 10, 2018 | Lee, Jooyoung |
Schools
