Kurebayashi Teru, a poor kind girl, recently lost her older brother, her only remaining relative. Before he died, he gave her a cell phone connecting her to a person he said would support her if he were ever unable to. As time passes she is cheered on by text messages sent by this enigmatic person, only known as DAISY. But one day, through an unexpected incident she starts to form a interesting relationship with the schools janitor Kurosaki Takasu, and starts to question DAISY's identity. DAISY may be closer then she thinks... As the mystery of DAISY unfolds, Teru also discovers that there may have been a lot more to the life and death of her brother then she ever dreamed . . . And that the man that may be more then a friend just might have all the answers.