
He comes across as selfish and inconsiderate many times. As an example look at his last gesture, it qas beautiful the whole gift, but was it necessary to make Wonwoo feel bad about loving the photo so much? Sending the photo away without consulting his partner? And then let him sulk while preparing this cute gesture. It's not a huuuge deal, but it looks manipulative and controlling of his partners emotions. That's why its so powerful because it looks so small and with the gift it looks like nothing happened.
So yeah i don't like that character, but i think the story is good and there are a lot of people like Eunyool in this world and less Wonwoos unfortunately.

So you're saying he's toxic?
Saying he's manipulative and controlling is quite malicious comment. And besides if you're calling him that based on what he did (the gift gesture in the end) then does Wonwoo is manipulative and controlling too based on how he got to make Eunyool agree with him going outside?
Like weloveanim said, Eunyool is not perfect, Wonwoo is not perfect too. In fact, everyone is not perfect, there's no perfect people in the world. Don't forget that Wonwoo can get physical when he's angry and for me that's a red flag, though he changed because he don't want to hurt Eunyool. Eunyool is insensitive but he still can't refuse Wonwoo if Wonwoo forced him too.
See, you really don't like Eunyool because you only focus on his fault but not on Wonwoo because you like him. Even just a simple liking on someone is making you blind.
In short, you're just biased.
But lets not fight with this anymore. We all have different views and its quite shocking how different people percieve things. It is a good story so lets just enjoy it.

True, I get that. Its just that the word toxic is such a strong words to describe Eunyool when there's a lot of REAL toxic stories around. Its not matter to me if they like him. I don't either.
This is a refreshing story. It is so sad if they label this as TOXIC when its not. It doesn't sit well with me.
I kinda excited to read a comment about how beautiful this manhwa is. But is just a few comment that focus praising this manhwa. I don't see a problem with any character though...