Isumi Saginomiya and Sakuya Aizawa are Nagi Sanzenin's childhood friends. All three young ladies were born into wealthy families and grew up together, but they all envy something about each other. Episode 
4 illustrates the irreplaceable days of interaction and horseplay between these Cutie Mates. The world 
is full of all kinds of new meetings...
Nagi-chan is unable to live 
day-to-day on her own,
Nagi-chan no es capaz de vivir 
su día a día por sí misma.
A Nagi não consegue viver sozinha...