Mention of “Samguk” in it. Looks Korean.
My Secret Terrius
Nae Dwie Teriuseu (original title)
TV-14 | 35min | Comedy, Drama, Romance | TV Series (2018 )
https://www.imdb.com/title/tt8591092/?ref_=nv_sr_srsg_0
https://www.imdb.com/title/tt9230800/?ref_=ttep_ep29