Shiina is a serious model student. She often quarrels with teacher Tamura. During an argument, Tamura was about to raise his hand to hit her but was stopped by her teacher Tsukino, whom she loved. In a teacher Tamura tried to put a debit book in Tsukino's desk drawer to blame his embezzlement money on Tsukino, but was caught by Shiina. discovered the debt book in Tsukino's desk drawer. Unexpectedly, this again made Shiina believe, and she asked him not to say it and promised to do whatever.