It is part of the Yorozu series and was first sold at C105. OUR PROMISE.
Doujinshi Yorozu Art Book B5/28P 2010 Utsururara
Doujinshi BRILLIANCE Art Book A4/160P T2 ART WORKS Tony
POKEMON Blue Archive illustration book rouka Doujinshi C103 Art Book B5/40P
Re:ZERO Rem Sketch Collection Vol. 5 Doujinshi Illustration Art Book A4/20P C97
Blue Archive Otona BLUE zucchini Doujinshi Illustration Art Book A4/24P C105
GO FOR IT! CARTOONS! Western Cartoon Illustration Doujinshi Japanese Art Book
