Hotaru Tsukishiro

The protagonist's classmate from junior high and high school. She’s spent her entire life in this town until she graduated from high school. This summer vacation, she’s returned to the city for the first time in three years and is attending university there. The conversation was a little awkward at first, but as she recalled it, she was reunited with the protagonist. She was truly happy to be reunited with the protagonist. ...There was just one thing she couldn't express in the back of her mind.