◆文字作品：新書上架「魔鬼的選擇：金銀島」 週邊紅皮小手冊

「紅魔鬼」這個詞是我想到的，因為當時已經有想把書中道具實體化的概念，所以老師希望我加強這部份的描述。

這本紅魔鬼也會不斷地出現在故事中。
以下是實體化的週邊手冊。

The plus one (gift within the book) is a menu called "The Red Devil". As soon as we decided to make a prop out of the book, to become something REAL , I came up with that name.