CATDOLL: "March Comes in Like a Lion" Fanbook Released with a Detailed Explanation of the Work

A few days ago, we said that the tenth volume of the manga "March Comes in Like a Lion" will be released soon. Since it has reached the tenth volume, the popularity should be high, but the money-making tool Fanbook has not been released yet. The publisher seems to have suddenly remembered this recently, so they decided to launch the first Fanbook of "March Comes in Like a Lion".

This fanbook will include all three chapters from volume 1 to volume 5. It includes character introductions, character short stories, a pilgrimage to the places where the characters appear in chapter 2, character popularity polls in chapter 3, etc. If you like March Comes in like a Lion, this fanbook may be a must-have for you.

This... thing below seems to be a gift when you buy a book. Is this a coin purse?