One night, while Fushihara is working overtime at the office, she hears a scary voice from out of nowhere, commanding her to leave. She tries to ignore it and get on with her work, but then suddenly her monitor turns to black, with the word "Leave" repeated on it endlessly. When a frustrated Fushihara goes to look for the owner of the scary voice, what does she find but the little baby ghost, Yuurei-chan! When Fushihara explains to her that she can't leave until she finishes her work, the little ghost replies earnestly, "Then I'll help you! So you can leave!"

When Yuurei-chan appears in the office one night, Fushihara is oddly nowhere to be seen. Yuurei-chan is happy at first to see that Fushihara was able to leave early, but soon realizes that now she feels lonely without her. On top of that, a thunderstorm begins to roar outside. With tears in her eyes, Yuurei-chan tries to convince herself she's not afraid. That she's not lonely. Then moments later, she hears the sound of the office door opening...

The 5th of May is known as Children's Day in Japan. On this day, many people display koinobori or koi fish streamers in celebration. Back at the office, Fushihara is more worked up than usual. Knowing what day it is and having the image of Yuurei-chan and Myako looking fondly out at the koi fish streamers outside the window in her head, she's determined to get all her work done early today. Meanwhile at the apartment, Yuurei-chan and Myako are plucking daisy petals, wishing for Fushihara's safe return home.

It's now summertime. Today, Yuurei-chan is eating the green peppers she hates, so that she can grow big and tall. Meanwhile, Fushihara is blissfully imagining the two with randoseru backpacks over their shoulders, a classic backpack worn by elementary schoolchildren in Japan. Her living together with Yuurei-chan and Myako had become commonplace at this point. However, Fushihara realizes she still has much to learn about the two little ghosts and decides to ask them for their birthdays. Since Yuurei-chan was born around this time of year, Fushihara decides to give her a certain gift...

There's no more food left in fridge at home, so Yuurei-chan and Myako head to the nearby shopping district to buy groceries. Nervous and with a shopping list given to them by Fushihara in hand, the two embark on their first ever errand. However, their shopping trip comes to a halt when the fishmonger happens to be a scary-looking man and Myako can't seem to find the words to ask for the fish they need. Thankfully, an old friend comes to save the day...

The streets are covered in a blanket of snow. Even though Myako can't stand the cold, she can't help but feel jealous when Yuurei-chan goes to play outside in the snow with Fushihara in the snowman outfit she bought for her. After concealing these feelings from the others, Myako stays behind to house-sit for Fushihara when suddenly Yuurei-chan appears excitedly back from outside at the front door. She's brought a little something to lift Myako's spirits. But what might it be...?