High school student Sena Shirai is just about to leave behind her shut-in lifestyle and join the outside world, when she becomes the victim of a traffic accident. When she opens her eyes, she's somehow been reborn into a fantasy world! However, everyone around her fears her as a witch, so she reverts to her former habits and lives a lonely life in the woods, until one day when... a young man comes to see the witch?!

(Source: Kadokawa, translated)

Official Comic Anthology for Akaiito that came with the limited edition version of the PS2 game.

This one-shot is contained in a book called 7 Ways to Become Absolutely Beautiful (Omoikkiri Kirei ni Naru 7 Nana -tsu no Houhou) (思いっきりキレイになる７つの方法).
Additional information about this book is as follows: No one will call you ugly again!; You'll become beautiful and score a fabulous love!!; Because this is a collection of super techniques to make you absolutely beautiful!
(Source: ShoujoMagic)