I am on board with the initial premise and I don't mind as much the idea that MC doesn't look reliable so people who don't recognize him as The Sage force him to prove himself, but it really gets old fast to have this UST every single chapter. Why do so many authors have to indulge the 'blushing hormonal teenagers who can't put their thoughts into words' trope, applying it to people of all ages and backgrounds.
At the point he realized her feelings were the real deal, I was hoping he would stop with the 'well she probably would be happier with [insert random younger dude]'. I'm not saying he even has to be on board with dating his foster daughter but just ignoring the situation knowing it isn't going anywhere is annoying to revisit constantly.
I should probably put some of this on the FL as well because I think it's pretty clear to her what's going through his head. It's probably more understandable that she doubts her feelings herself and doesn't want to actually admit to having a father complex. But I think my bigger issue is that what I WANT to see more of is how the 'only actual competent person was fired and everything is going to shit' sideplot is going.
So, all that said I do want to see where this is going, I just hope they do something to get the sexual tension out of the way of the plot.