第4話: 涼風で休むしのぶ、よこの靴箱から謎の手紙が発見される

Shinobu stays home from school with a cold. While her friends at school are worrying about her, Yoko suddenly runs up and informs the group she found a letter in her shoe box. (Source: Crunchyroll)

▶ 視聴はこちら Crunchyroll