If this is your impression after reading it once then read again. Because if you think this is not a cute and fluffy story I don't know what you were reading. (=・ω・=)
Gyul is not a negative person, he's just tired - of work and of the people around him. That's why it's so easy for him to get along with other people at the end when his financial problem is lifted from his shoulders.
About the aunt, i think it's because no matter how cruel she was Gyul still treats her as family. Unlike his mom who ran away, his aunt took him in. In that mindset, i kind of understand.
On Yool, it's because hyun ho encourage him to think about himself for the first time in years. It's just a coincidence that it happens when yool was pushed by the aunt.
Hyun ho's been in love with gyul since middle school, yes, but i don't think his parents knew.
And coming out is a big deal in korea. It's not the most gay friendly country.
The story is not perfect but it's one hell of a cute story!!!!!!!!!!
A lot of people keep saying the story is beautiful and cute, but tbh I found Gyul to be a pain in the ass for most of the story. And he's supposed to be a very negative person, why was he so optimistic when it came to that bitch of an aunt of his? He's supposed to be smart, how could he not have suspected anything? Dude... And it's not like Yool was ever spoiled, but when he asked for once to see his brother, I knew right away there was something wrong, but they just ignored it. The kid is living in a house where he's not welcomed, did you honestly not see it coming? For all the trouble and shit they went through, the ending was nowhere near as satisfying imho. They should've at least come out to Hyunho's parents and gotten their acceptance. I mean, Hyunho's been in love with Gyul since middle school! There's no way the parents won't accept it because in a way they'll know it's even lucky Hyunho actually got the object of his affection after so many years and effort. Plus, Hyunho's not even straight to begin with so they won't even be able to blame Gyul for it. Another thing I would've liked is for them to get married. Maybe not officially since it's not possible in Korea, but something similar that symbolizes marriage. But what did they do? They only temporarily got to live together after 7 years though a "study abroad" plan and as a result, Gyul is always busy and barely makes eye contact with Hyunho in a day even though they live together. If you think this is a cute and fluffy story, dude, I don't know what you were reading