Unable to sleep or find satisfaction in his daily life, Yamori Kou begins exploring the city at night, where he meets a strange girl who offers to help his insomnia by sleeping beside him.

Note: Winner of the 68th Shogakukan Manga Awards for best shounen manga (alongside Ao no Orchestra).

Shikada Kokonotsu's father owns a rural sweets shop, and his plan is for Kokonotsu to take it over one day. However, Kokonotsu wants to be a manga author instead! One day in summer, the cute but weird girl Shidare Hotaru, from the famous sweets company, comes to pay a visit. Apparently, Kokonotsu's father is famous and she wants him to join her family's company. However, he will only agree if she can convince Kokonotsu to take over the family business!