Yami was initially hired to kill Rito by Lacospo (one of Lala's suitors), but after learning that Rito is not Lacospo described him to be, she turned on him, but still claims that she will kill Rito eventually and will stay on earth until her mission complete (even though the job is technically over). Later, she actually confirms to Rito that she only said that as an excuse to stay on Earth, and warns him not to make her too angry (Chapter 138). As time passes, Yami seems to grow some feelings for Rito. It is Rito who introduced her to taiyaki, the only thing she really eats. Rito carried her on his back to Mikado's clinic when she overused her powers, saved her from another assassin hired by Lacospo, and, unbeknownst to him, showed her a kinder side of himself that made her envy Mikan for