Twilight Elements color illustrations

This is a doujinshi that I distributed at COMITIA 147.
This is a collection of color illustrations and rough sketches of "SAKUYA".
This book is a collection of settings and concept art for original fantasy characters and spirits.

Mail order in Japan>
https://ecs.toranoana.jp/tora/ec/item/040031134632/
https://www.melonbooks.co.jp/detail/detail.php?product_id=2329761
https://alice-books.com/item/show/9001-5
https://ugs-kotatsu.booth.pm/items/5528974