Klaris Lutz

A friend of Karin's who works for Ishida Finance. A woman who loves money, hates being poor, and buys lavish things (including a Ferrari company). She is only known from instant message conversations with Karin until

[Spoiler] the ending where she visits Karin.

She actually looks more mature than what her instant messenger portrays. [/Spoiler]

(Source: Wikipedia)