"Manga" tutorial books Collection (Japanese)

Are this books in Japanese?, no traduction?

Thanks

pls make the .part smaller, I can't download any file before the download link gets refreshed

Thanks for this amazing collection, just to let you know the book スーパー・ポーズブック ヌード・バラエティ編 5 Gorgeous.pdf, seems to be mixed up with the book キャラクターを動かす！マンガストーリー講座.pdf, because the content suddenly changes on page 58.