I actually quite like getting to see the MC learn to live in the life of Sihyeon. He’s learning about his job, his day to day, and his members instead of other isekais where the MC instantly does okay in everything even though they’re literally a different person in a different world.
It’s more realistic that non-interesting stuff happens in between constant action.
Some people are just too desperate to see spicy action to realize that the focus isn’t on the MC and the ML, but the MC getting to live a life he wasn’t allowed to and completely relearning about the world in the pov (body) of someone else.