不知火七海

人偶般美丽寡言的少女，缺乏表情。 出身在起源于很久之前的忍者世家，有着优秀的身体能力，擅长隐藏气息。家族已经开始没落，所以她的能力是家族为了重振以前荣光而利用来做地下交易的手段。

简介来自 Bangumi

A young girl with a fragile, doll-like appearance, she is actually incredibly capable as she was born into a ninja clan, dating back to very old times. Her physical abilities are exceedingly high, and she's good at erasing her presence. She rarely expresses her feelings, making it difficult to read her emotions. She thinks much differently than those around her while at the same time able to find common ground. She has the ability to erase the memories of others, and has been ordered by her father to use that ability many times. She fears her powers and hates having them with all of her heart. The routes of Ron, Heishi, and Akito are only accessible when the player selects Nanami as the protagonist. [From English official site]

简介来自 VNDB