八木君は後輩くん

Leading an unremarkable high school life, "You" finally resolved to make a change.
You enrolled in a university far from your hometown, successfully making your so-called "college debut."

There, a younger student named "Kou" appeared, and you soon grew close to him.
The two of you enjoyed your days together until one day, the conversation turned to a person named "Yagi-kun."

From that moment on, Kou began to exhibit increasingly suspicious words and behavior...