| Name | Period | Host |
|---|---|---|
| Lee, Ki-ahm | Sep 1, 2019 ~ Aug 31, 2021 | Kim, Bumsig |
| Ki, Haseo | Aug 15, 2019 ~ Aug 31, 2021 | Kim, Bumsig |
| Zhang, Genkai | Aug 10, 2019 ~ Aug 22, 2019 | Kim, Inkang |
| Yongnam Lee | Aug 1, 2019 ~ Aug 31, 2021 | Kim, Bumsig |
| Park, Jongil | Jul 18, 2019 ~ Aug 31, 2021 | Kim, Bumsig |
| Shin, Sug Woo | Jun 23, 2019 ~ Aug 19, 2019 | Choi, Youn-Seo |
| Huh, June | Jun 17, 2019 ~ Aug 28, 2019 | Keum, JongHae |
| Jang, Juhi | Jun 12, 2019 ~ Jul 2, 2019 | Park, Jinsung |
| Oh, Hee | Jun 10, 2019 ~ Aug 3, 2019 | Choi, Youn-Seo |
| Catanese, Fabrizio | Jun 10, 2019 ~ Jun 20, 2019 | Keum, JongHae |
Schools
