What is the fine-grained topic of the following text: It's interesting that he would use his pen name on the October 17th, 2009 release of 「北へ。」NOCCHI ART WORKS, but will be using his real name for the December 22nd release of Oyari Ashito Illustrations Chronicle (大槍葦人画集 Chronicle). Only return the topic.
Use of pen name vs real name in the release of artist's works