
I'll be waiting for the translations because I have no Lezhin money (sucks, I know), but I guess he may mean that his family has just been keeping up appearances. That there is no substance or actual power to them, it's just that they have a large amount of wealth to their name to create an illusion of influence. We may find out in later chapters about the Yoon family, but I do think that this delusion of grandeur his clan has of itself bothers Seungho to a degree that he sneers at the thought of his surname, and isn't shy about showing his disdain.
Baby Na-Kyum better watch his butt because Seungho is after more of it ╮( ̄▽ ̄)╭

I don't read Korean, so I use an app to translate every bit of dialogue. So my translating thread is downloading images from toonkor —> Using papago to turn the image into text —> Find the most suitable translation. I use either papago, google translate and systran to have something closer to what can make sense. It a long process that could take 45~60 min and I do it only for this manhwa.
For now I don't buy anything from Lehzin because I have to pay for many platforms, add to that bills. It is not easy to keep up.

Seungho is indeed a non-conformist considering he is renowned as a rich sodomite who marches to the beat of his own drum. And I agree that the author must craft Seungho to be a complex character with many facets, so as to add even further interest to the plot (the plot is interesting in and of itself, but his scheming and being a step ahead just makes it more nail-biting). Can't wait for the translations so I can join in on the discussion! I feel so friggin' out of place. But kudos to our boy Seungho for unmasking Inhun as the fraud that he is.
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Seungho is one hell of a smart guy. He is well versed in art and literature as he is in martial arts. Exposing In-hun was really a cunning move.
About his family he said : "The Yoon family is no different from a cheap merchant with a large amount of money". Google translated it as frivolous merchant. Does that mean he is feigning his family decline ? Does he hate his lineage?
And man, he feels clearly something towards Nakyum.