Sakuraba Nagisa

Koutarou's younger sister.

When she was little, she was shy and followed her older brother around. At the time, her dream was to become her brother's wife.

Now that she has grown up and has acquired a certain amount of social common sense, she does not mention such things, but it is still there in the back of her mind.

In contrast to her childhood, she half unconsciously plays the role of a child full of energy who does not cry when she falls down.