Just like Manga Kousien in August, which was held in the same building, Cul-Port in Kochi-city, the Mansai attendees were allowed and encouraged to draw manga graffiti freely on the wall papers. Most of them were drawn by teens. They were able to draw anything they wanted. I introduced the professional manga artists' works in the part 2, then you may find future artist's one in this section.
Graffiti on the wall