|Hair colour:||Dark brown|
|Family:|| Hidenori (cousin)|
Emi is a girl living in the countryside where Hidenori's grandparents stay.
Emi first makes her appearance when Hidenori visits his grandparents in the summer. She kicks Hidenori into a river, thinking he's Kiyohiko. She is then thrown into the river when Hidenori pushes them into the water.
She and Kiyohiko spend time with Hidenori, enjoying the summer together. During this, she develops feelings for Hidenori, and is saddened on the day before he leaves. On the final night together, she sends Kiyohiko off under the pretext of buying some juice in order to tell Hidenori how she feels about him. Before she can confess her feelings though, Hidenori reveals that they are actually cousins, leaving her mortified.