That's why I got frustrated. She told me that her kindness wasn't really hers, but it belonged to someone else. Because what she is...

[Hiro hesitates as he wonders on how to word this... It was no wonder why she came off as artificial to him at times.]

She's a clone, Otome. Ai's never had anything like a family or anyone to influence her throughout her life. She's like a blank slate that doesn't know anything else. But she's definitely still a human being.