Houkiboshi Hikari

Akito's childhood friend who suddenly appeared back in his life like a comet sweeping back on its orbit.
Hikari, Akito, and Saya always used to stargaze together at the secret observatory.
She's cheerful and positive, always willing to try something new.
Sometimes her insatiable curiosity can cause trouble for those around her

Stargazing for Hikari is just like traveling the galaxy together.
Her interest in the stars, in seeing further, farther into the unknown propels her forward at the speed of light.
She began to stargaze after meeting Akita and Saya, but their meetings were cut short when her family moved away and she lost touch with her friends until they met again several years later.
By then, tomboyish country girl Hikari had grown into a cute and stylish teenager