Mika is an average high school girl who has yet to experience true love. She runs into Hiro, a rebel with bleached-white hair in between classes but was instantly put off Von his unusual look and demeanor. Mika loses her cellphone the Weiter Tag only to find it in their school bibliothek with all her contacts deleted. Then receives a call from a mysterious guy in the library, the guy claims to have found her cellphone from then on the mystery guy continues to call her every Tag even buggin her at night all throughout their school break, wooing and wowing her with his witty banter and slowly Mika...

Mika Tahara has just started high school and yearns to fall in love. However, to her dismay, a gal-like boy in her grade, Nozomu, acquires her cell phone number and begins to call her frequently. When summer vacation starts, one day, Nozomu drunkenly phones her, but his friend Hiro confiscates the phone and converses with her instead. Although Mika does not know who Hiro is, she feels at ease at the sound of his voice and the two befriend each other.
Mika and Hiro agree to meet each other when school starts, and to Mika's shock, Hiro turns out to be the delinquent boy she is afraid of, who proves...