In a strange, face‑shaped jar lies the entrance to a magical realm. Inside the jar is a vast desert and a world of spell‑binding wonders where Akubi‑chan resides. Whenever someone yawns near the jar, Akubi‑chan is summoned: she bursts forth, addresses the yawner as her master, and is bound by a rule to grant that master’s wish. The same rule dictates that when the master yawns a second time, the magic ends and Akubi‑chan returns to the jar. One day, a shy girl named Koron stumbles upon the jar and yawned just before it, summoning Akubi‑chan. The two become close friends, and Akubi‑chan attempts to grant Koron’s wish, though the outcome turns out to be unexpected.