The plant is thrown away, and the incident should have ended...or so it seemed.
Mio: "No, no, I won't let it end here☆"
Mio took the plant she's secretly grown with her when she gone to a memorial service in the countryside.
With her brother and cousin caught up in the fray.

During the latter half of summer vacation, Mio and her brother gone to a relative's house for a memorial service in the countryside.
There, they find a young cousin they haven't seen in years.
In contrast to the adults, who were busy with the service, the cousins had a lot of free time.
However, Mio had something special. That plant.

[Translated From Getchu]