Kusuri Yubi Hime
Kusuriyubi Hime / Kusuriyubihime / Ring Finger Princess
Completed Released: 2007
Houjou Hinaki owns a ring given to her by her father, but it is no ordinary keepsake. When she kisses it, a young nobleman named Sae appears and grants her wishes. Sae is trapped inside the ring and cannot stay outside for long. With Hinaki and her eccentric schoolmate Yume-senpai, he tries to find a way to escape his prison.