Kwon yuri info ( from FYL)

- he has 2 sis ( don't biological or adopted)
One is good & kind ( the one who is marrying),
and another is a rebellious and tough( black haired)

- I think Yuri is in love with his "good" sis. Because in one of the chapter he said Yohan that he should be grateful that at least he could talk about his love life. and this shows that kwon Yuri is in love with someone who he shouldn't and couldn't even talk about :(

- Kwon Yuri is a 2 faced person and always pretend to be kind to everyone. He is aware of his bad personality

- Kwon Yuri was depressed for along time when he heard about his sis marriage ( they mentioned it in one of the chapter)

- Besides Yohan, it seems that Kwon Yuri spent his whole time with that Geography teacher ( I think he is the uke but not sure since their character design is completely changed)

- Geography teacher would always scold Yuri to quite smoking. There ARE some suggestive moments read chapter 27 to find more about them ;)

- So all in all, His whole high school life was around Yohan and Geography teacher mostly.