Kimi to Natsu no Naka

君と夏のなか

Originally released as booklets bundled with the limited edition release of the Kimi to Natsu no Naka volumes. 1. Aru Natsu no Hi no Yoru to Asa (ある夏の日の夜と朝, A Certain Summer Night and Morning) 2. Bonus story about Chiharu and Wataru's overnight stay at an inn.