This is "Mecha-Mori YouTuber Idol Ion☆" by Rina Yamamoto. Published by Shogakukan Junior Bunko, it won the grand prize in the 6th Junior Bunko Novel Award. I'm selling it now because I've cleaned up my bookshelf and no longer read it. I've read it two or three times, and there are no stains or folds, but there's a part on the cover's top left corner where it looks like air has gotten in. (See photo 6) Please consider this, understanding that it's a book that has been stored at home. Price: ¥650 + tax #RinaYamamoto #Rina_Yamamoto #book #JapaneseLiterature/Novel/Story