Maya Akutsu (Yuki Amami) began her class teacher career in 1998 April. The class (Primary 6) Maya taught was problematic. One student, Ai(12), told Maya that she love Maya, but Maya keep tell Ai that she love every students. Ai tried to cause things in class, until in science lesson, Ai put a burning match into the flask and made explosion, Maya knew that Ai has mental illness, she wants Maya to take total attention to herself. Ai decided to libel Maya for brutal torture, and next day Ai's mother found headmaster, and got Maya to stop teaching Ai's class. Then Ai made Maya to hit her, and called the discipline teacher, and Maya had to resign. Maya married her husband, got Sean. When Sean was 5, got mental illness. Maya and her husband always struggled about Sean, make Sean sad. Sean knew Maya loves butterfly, and Sean had been told not to go to a lake which was deep enough to kill him. Next day, news report on TV reported that Maya's husband's company has avoided heavy tax and the boss is arrested. Maya and husband keep struggling, Sean was sad and found Maya's favorite white butterfly. Sean woke up and got drowned at the deep lake. Maya was blamed by husband that she gave too much stress to Sean, make Sean killed. Maya decided to suicide, but Ai (17) phone to Maya, telling Maya that she is killing herself. Maya succeeded in saving Ai and Ai told Maya to become teacher again. Maya was employed in a primary school - principal said that the "class 6-2" had made 2 previous class