星辰密文

Daichi Satou is a fourth-year university student researching artificial satellites.
Recently, he'd gained a new sister: his sister-in-law.

Hitomi is an American whose achievements in research were said to guarantee her a Nobel Prize win. She'd come to Japan by sheer chance, and Satou was constantly ridiculed by her.

One day, as he became increasingly frustrated, he found a strange cylindrical object in the woods behind his university. It was made of metal, and it was outputting a code.