Kusano

She is often called Kuu-chan but was referred to as the "Green Girl". She is Minato's second Sekirei. She calls him Onii-chan (Japanese term for 'Older brother'). She has power over plants-to make them grow. She does not like fighting or quarrels and she can be seen stopping them when they start. she said that she wishes to be Minato's wife when she grows up.

(Source: Wikipedia)