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...

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...

An unknown sender has been sending letters to the apartment every day since New Year's. All of which demanding that they move out. Thinking this is just somebody's idea of a prank, Fushihara doesn't think much of it at all. But then one day, instead of a letter, what do they receive but a package in the mail! Fushihara and the two little ghosts are frozen stiff as something inside the package begins to stir. What might be about to come out...?