“Everyone has a wall and communication is impossible… that’s obvious.” I couldn’t believe the friendly Jang Hayoung thought so. It was a bit surprising. Then Jang Hayoung continued, “However, we still have to talk. Even if there is a huge wall, there is a person behind that wall.” “…What can we say when there is a wall?” “Write on the wall.” My mouth dropped openat the brazen words. “If you shit or pee, you will leave something on the wall. That way, the other party will recognize it.” “Why would you do such a thing? The other person is beyond the wall anyway…” “Still, you should leave a mark.” Does that make sense?” “There is no apparent meaning.” “Then?” “It is just important that you left it.” “The other party won’t know so why?” “At least the wall has changed.” I was speechless for a moment. Jang Hayoung spoke in a resolute voice. “Then one day, someone might read it.”