Narumi Sensei Is Somehow Mysterious

Suzu is not good at showing her emotions. However, my best friend and her "teacher" who understood her deeply always encouraged her was by her side. However, one day, her best friend disappears after being caught up in a mysterious case. With the mysterious power of the "sensei", he regains his best friend, but Suzu realizes a certain sense of discomfort about the "sensei".