
To me Itsuomi just doesn't feel like a genuine person, which is why I understand Oushi's concern for Yuki. He's just so expressionless and still (well, as pretty much any male leads in lots of other mangas). He doesn't give out much about himself to neither the characters in the manga or to the reader, so I can't feel anything towards his character.
Also, what Oushi said in the chapter 17, how he lost so much in such a short time kinda resonated with me, even though the "so much" is subjective from his point of view, he is the one who gave this much thought into his relationship with Yuki, it was worded really nicely and I'm gonna think about it for quite a while.

Yeah i feel you. At first i thought he was that type of cold cool guy that's popular in many shoujo manga that reluctant giving the girl affection or something but turns out he's not and he's grown on me too. The way he bring himself smoothly and genuinely care for her too. His nonchalant attitude actually pretty refreshing for me too, he doesn't came out as overbearing for her and treasure her
Ya'll stop dissing and try to find out why In Seo's parents look like identical twins.