Yoru no Kuni

22-ji no Annaibito (The 22 O'Clock Guide) Refusing to accept the death of her beloved dog, Choco, a young girl named Chiyo falls asleep, only to wake up in the Night World. She is greeted by Yoru, an entity that guides her through the realm of the darkest, most beautiful time of day. As Chiyo learns to cope with the loss in her heart, the starless world around her begins to light up. 26-ji no Sagashimono (The 26 O'Clock Search) Since childhood, best friends Hina and Tsumugi have used an exchange diary as a token of their friendship.

Angered that Hina wants to open up the diary to include a new girl she has befriended, the jealous Tsumugi throws it away.