Thanks so much for your lovely comment dear ♥
Jun and Kazu are really close, aren't they? Well, they share some important memories with each other and I think deep down, they believe that no one else can understand them as much as they do.
You are right with Kazu. He is really vulnerable. Even though Jun was in a gloomy state during the first chapters, he is doing a lot better now. He is slowly finding a way for himself, while Kazu still needs to find that.

Karina and Sho... I don't know yet :D Satoshi and Kazu will be difficult ><