So far it seems like the transition and shift of dynasty similar to 6 Dragons especially with the mention of Yi Bangwon/Lee Bangwon (Jang Hyuk hyung). Hence I find Seo Hwi similar to Lee Bang-ji & Nam Sun Ho similar to Moo Hyul of of Six Dragons, respectively.

They both have spouses working as an undercover agent. Cute, comedy and romance with a little bit of action,

It seems Konshu Tsuma ga Uwaki Shimasu is an earlier Japanesse version. The same story of a wife potentially and eventually cheating on the husband and the aftermath that follows.

Similar situation, a popular actress and a regular guy, and then a love blossoms.