Eriko Nanao

Eriko is Ryūji's 19 year old cousin. She really likes him and despite the fact that she has been studying in America for some time, she returns to Japan to see his face and also to intercept a Lost Precious that FANG took from her ten years ago. Despite the risk of taking anything that FANG believes is theirs, she doesn't back down because she suspects the content to be an S rank Lost Precious. Capturing it will prove her worth to the other Lost Precious hunters. Initially, being unable to identify who Rose is, she is shocked when she discovers that Rose knows Ryuuji's name and that she's a Red Dragon.