It is his joining of “The Uncanny Counter” Season 2.
Sports Donga reported on Oct 12th that Kang Ki-young newly joined the cast of “The Uncanny Counter” Season 2.

According to the report, Kang Ki-young is expected to show off his three-dimensional charm by appearing as a completely different character from his role in “Extraordinary Attorney Woo”.

“The Uncanny Counter” Season 2 was reported to be broadcast on tvN. Recently, it was announced that actor Jin Seon-kyu would join, drawing attention. The drama is currently under discussion for OTT programming.

“The Uncanny Counter” Season 2 depicts Korean counters working in cooperation with overseas counters against new enemies.
All of the original members, including actors Jo Byung-gyu, Yoo Jun-sang, Kim Se-jeong and Yeom Hye-ran, are said to appear, raising expectations.

Meanwhile, “The Uncanny Counter” is a drama based on a popular webtoon of the same name. It was very popular at the time of airing and became the highest rated OCN series so far.
Source: wikitree