"Mamoru, do you know what your name means?" His mother whispered as she held a new-born in her arms. Mamoru shook his head. "Well, your name means 'to protect' so you must protect your little sister."

"Yes mom!" Mamoru smiled as his mom showed her the new-born and her name was Mamori.

"Higher! Higher! Oni-chan higher!" five year-old Mamori shouted as her older brother (twelve years old) pushed her on the swings. After hours of outdoor fun, they headed on inside and Mamori's older brother, Mamoru, made her lunch. Mamori's father passed away when she was just a baby and her mother was always working; so, Mamoru was the one who always looked after Mamori and sometimes he even watched over the neighbors' kid, Sena.

I guess you can say Mamori picked up some protective instincts from her big brother. How her Oni-chan looked after her, she did the same when Sena came over. However, Mamori was not as extreme as her brother.

When Mamori was in the third grade, she was made fun of because of her different colored hair by a boy. Mamori told Mamoru and he told her, "Don't worry; Oni-chan will take care of this!" The very next day, that boy transferred to another school. "Oni-chan, what did you do to Takeru?" she asked when she came home."

"Who?"

"The boy that I told you that made fun of me!"

"Oh, nothing. We just had a little talk." Ever since that moment, Mamori realized that she should be careful of what she says in front of her older brother.

When Mamori was in the sixth grade, a boy sent her a love letter and Mamoru found out…. And so, the next day when Mamori decided to decline his request, before she could even get near the poor boy he runs away. She knew that this had to do something with her Oni-chan. Even when she asks him what happened, he always smiled and responded with, "I don't know what you're talking about."

That same year, Mamoru graduated from high school and he decided to study abroad to America. Before he left he hugged Mamori and said, "Mamori, if anything is wrong, call me okay? I'll make sure to fly back right away! Remember to eat three times a day and remember to sleep on time. If you don't know how to do your homework call me too!" Teary-eyed, he kissed Mamori on the cheeks and said his good byes and left through the gates. From then on, every night he called home to see how everything was going and on Mamori's birthday he will remember to send her a gift.

Now, Mamori is a senior at Deimon High School and she is the manager of the football team. During her phone calls with Mamoru she tells him almost everything. The only thing she never dared to mention was, Hiruma Yoichi. She was afraid that if she told him anything about Hiruma, he will tell her to quit being manager or maybe even worse, fly back and do something. She did not know who was more fearful, her Oni-chan or Hiruma and she did not want to find out.