Yuu came looking for Guren, he saw Goshi and asked him what he was doing Goshi uses the smoke from his pipe to create illusions So he created an illusion and made the car disappear so no one will see or hear their 'fucking' noises
You guys need to realize that not everyone get a happy ending or deserve one I actually like how it ended. Jihyun realize he hurt chiwoo too much in the past and just wanted to see him one last time before he starts his new life away from him
Guys I’m sure he not going to do anything he said it himself he doesn’t like him like the he use too