They are both game/variety show and they honestly have lots of similarities but unexpected q was canceled

Both are about celebrities running a business. In unexpected business they run a supermarket in a village for 10 days while the original owner is on vacation. Kang’s Kitchen is a New Journey to The West and Youn's Kitchen spin off.
5 members are traveling to Jeju-do to open up a restaurant and serving the locals and tourists.
(There are three Kang’s Kitchen)

Both are about celebrities running a business. In unexpected business they run a supermarket in a village for 10 days while the original owner is on vacation. In Youn’s Kitchen they open a Korean restaurant on an island in Bali, Indonesia, to serve local people and tourists. Youn’s kitchen also has a sequel
(Youn’s kitchen 2) where they open a Korean restaurant in Spain.

Both are about celebrities running a business. In unexpected business they run a supermarket in a village for 10 days while the original owner is on vacation. In Youn’s Stay they open a traditional Korean guesthouse in Jeollanam-do for foreigners visiting Korea.

Both are about celebrities running a business. In unexpected business they run a supermarket in a village for 10 days while the original owner is on vacation. In coffee friends they make there own cafe in jeju island for charity.

Both have something to do with celebrities doing something “normal”

In off to school celebrities of course got to school while in Coffee Friends celebrities work at a cafe.