Чібікі Тацуджі

Librarian in charge of the No. 2 library room. He was the teacher for class 3-3 the "first year", the year Misaki Yomiyama died. Some years later, he resigned the teaching and stayed as the master of the library. Since then he kept a record of the phenomena, the deceases and their connections, and shares his findings with Kōichi and Mei.