Sign no Tsukame!

is a Japanese light novel series written by Masashi Hasegawa, with illustrations by Ryu Sakurai. The series began publication on November 10, 2006 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
"What kind of day will it be today?"

Shuichi, who is "instructed" by a senior in the basketball club and is inconspicuous in the class. Ritsuko acts as fortune-telling, hoping that she will turn to her favorite person. Rena asks for stimulus, wondering about herself who can't get absorbed in anything. And Seiji who wants to make all the people around him happy from the mistakes of the past. He received an email when he was in trouble, and a "sign" that his wish would come true if he followed the instructions.

A long day of four high school students begins when they receive the rumor "signature" transmitted to Kanoya High School-!