Eyrate

I found this tad bit of information on BaiduWiki. "Gyeongbokgung Detective Agency is a South Korea n drama television series starring Lee Joon-gi, scheduled to premiere in South Korea in 2027. Set in an ancient royal court, the series blends detective investigation with comedic elements, telling the story of a king and a newly appointed historian, Li Rui, who join forces to solve cases." it went into the synopsis a little bit more

I agree with everything you wrote, including how much it reminded me of Stranger Things with some of the visuals and story. in a truly captivating way

how have you seen six episode? I'm watching it on Disney and there are only four episodes available

Hulu