Kingdom starring Joo Ji Hoon and Bae Doona already have two seasons and the third season will probably come in two or three years. But don’t worry because there might be a prequel. Jun Ji Hyun will be the main lead and it will most likely be with new characters too.
tvN confirmed that there will be a second season of Arthdal Chronicles and they were set to film in the second half of the year but it was postponed due to pandemic. It was set to air in 2021 but there might be changes as production is still discussing with artists and their schedules etc.
Netflix Original’s Love Alarm will have a second season and they already had their script reading and filming. Official release is not yet announced. Kim So Hyun Song Kang, and Jung Ga Ram will all return for the new season.
The first season ended last May 30, 2020 and a season 2 is confirmed. Although the details are not yet revealed, one of the cast, Ahn Chi Hong played by Kim jun Han stated that he will no longer be part of the next season. The second season will possibly return sometime in 2021.