A high school boy. He attends the same school as the protagonist.
By day, he lives as an ordinary high school boy, but at night he often walks alone through the neighborhood park or along the riverbank.
At school, he and the protagonist only exchanged brief greetings, but after one particular night, they began to talk. From then on, the two naturally found themselves meeting on sleepless nights or on evenings when they just wanted to chat a little.