Blue Angel (book)

Blue Angel is a book featuring the protagonist of a same name in Yu-Gi-Oh! VRAINS. The book is an inspiration for Aoi Zaizen's online persona and her Trickstar Deck as her brother Akira used to read the book to comfort her when she was younger.

According to Spectre, the book is a story about an angel who lived a lonely life due to her cold-hearted personality. Though she acted tough, the angel by herself cried due to loneliness, shedding teardrops with color of blue. When she was attacked by the evil monsters, her fellow angel comrades come to her aid. Through the battles, she learned of friendship and kindness, and changed for the better, gaining friends who fill the void in her heart. However, for reason unknown, the angel continues to shed tears as she vanquishes the evil monsters.