Hiroto, who is nearing his thirties, and his cousin Natsumi, an art student.

The couple's single-family home life is entering an unprecedented transitional period...!!
Natsumi fell from the roof.

What are the intense emotions boiling inside you?

And the second art festival is held!
The deepening friendship between Nakajima and Natsumi,
There is a blue between Yamada and Akari.
-And finally, the parting with Hideki Ogoya.

If there is a meeting, there is also a parting.

Human relationships that grow closer and further apart.

Still, it is a clear autumn day that is somehow nostalgic and comfortable, like living in a single-family home.