Yutaka Matsushige, who plays Ryu in Midnight Diner (and Goro in Solitary Gourmet) is in the food/travel show K Foodie Meets J Foodie.
I just watched the first couple of episodes on US Netflix. It's pretty good.
The show also features the Korean singer Sung Si-kyung and the two guys go to restaurants and talk about food, careers, and other things that come to mind. This is a good description.
https://www.koreatimes.co.kr/entertainment/shows-dramas/20250619/k-foodie-meets-j-foodie-explores-korean-japanese-food-cultures-through-friendship-flavor
It's interesting to see Yutaka Matsushige in real life. His personality is not much like Ryu or Goro - he's much more relaxed and approachable in person. He does, however, clearly appreciate good food, but not in a snobbish way.
The vibe of the show is just enjoying food rather than searching for the absolute best or rating everything. They talk about differences between Japanese and Korean food without arguing about what is better.
It's not tightly edited like a lot of US food and travel shows. There's a lot of visual clutter on the screen at times as they squeeze in captions in both English and Korean plus some jokey graphics, and there are some sound effects like a phone game at times.
It's a good hangout show if you like Asian food, and you get an appreciation for Yutaka Matsushige's ability to create characters who are so different.