Itsuka no Haru
いつかの青春
A 15-year-old high school girl named Ichihara Yui encounters Itsuka Daisuke on the first day and initially mistakes him for a teacher. They later meet again in class, where it is revealed that Itsuka is also a student. He is 25 years old and attending high school to experience what he missed ten years earlier. A one-shot titled *Irotoridori no Sekai* is included.
