Takahashi Rumiko Gekijou Ningyo no Mori

Synopsis

Sokichi helps Yuta escape, and they drive to the Red Valley. He reminds Yuta of a signal of arranged stones Yuta devised with Nae to meet in the Red Valley on the day he was to depart. Yuta denies that he gave the signal and suspects that someone else did. Eijiro and his men catch up with two girls and stabs Nae with his cane sword. He admits that he set the stone signal to test Nae's loyalty to him. When she arrived to leave with Yuta, Eijiro killed her in a jealous rage. Eijiro had planned to revive Nae with the mermaid ashes, but could not find them. He explains that for decades he searched for the ashes, and after finally finding them, he used them to revive Nae's still pristine corpse laying in the Red Valley. Mortally wounded, Nae staggers into in the Red Valley and remembers that Eijiro killed her there. Meanwhile, Yuta and Sokichi have escaped Eijiro's men and Yuta embraces Nae. She finally recalls the events of the past, but she dies in his arms. As Yuta and Mana leave, Yuta asks Mana if she's jealous, but Mana cheekily asks Yuta if jealousy is some kind of dessert.

(Source: Wikipedia)