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...
and most of all, she's gotta be funny 
enough to make me do a spit-take.
y más que nada, debe ser lo suficientemente 
graciosa como para hacerme escupir.
E também precisa ser engraçada o bastante
 a ponto de fazer eu me cuspir rindo.