Mimika-san (Mimika Noma) and Yuzumori-san are friends.
One day when running to High-school (2nd year) Mimika spotted a young girl playing with a cat. The young girl instantly captivated her, so she approached her and in panic stated that she was not a suspicious person. The young girl ran away.
Later Mimika noticed that she dropped her wallet and went looking for it. The young girl sees this and helps her look for it. So begins Mimika's friendship with a elementary school girl (4th year).