I'm not sure if this interesting question got through.. :
What is in the green back-pack that you wear..? Katanas?, drawing utensils?, Hot Pockets?, ...Is Cen in there..?
Green? You mean that hay coloured thing? It's a quiver. It has arrows... or more accurately all kinds of tools that somehow can be strung onto his bow. Cen wouldn't fit in the quiver.
