On a remote island far from the mainland named Urashima, a man washes ashore, with no recollection of his name or homeland. What he does recall, however, is that he is a time traveler with a mission: to save a certain girl from harm. As nightfall arrives, he meets Rinne Ohara, a girl who sings a tune that reminds him of a specific name—Setsuna—and decides to use it as his own.
Knowing another "Setsuna" herself, Rinne takes him to her household as a servant, hoping that he is the same one she remembers. On the other hand, Setsuna continues to learn more about Urashima, desiring to identify his lost past. He comes to know about the island's folklore, its three great families, and the endemic disease that prevents anyone afflicted from stepping out into the daylight.
As the mysteries of his missing memories and Urashima itself unfold, Setsuna must remember his purpose and fulfill his mission as soon as possible. But, as he witnesses the myriad of troubles plaguing the island, Setsuna begins to question—is his temporal displacement merely an effort to change a single girl's fate?
[Written by MAL Rewrite]+ More
Characters & Voice Actors

Harisu, Tarou
Supporting
Hatoma, An
Supporting
Interpreter
Supporting
Kinjou
Supporting
Kurutsu, Natsumi
Supporting
Kurutsu, Subaru
SupportingRecommended for you
Rokudenashi Blues
Movie
33m
Kiss wa Hitomi ni Shite
OVA
31m
Eternal Filena
OVA
27m
Natsunagu!
TV
4m
Twilight Of The Dark Master
OVA
45m
Dances with the Dragons
TV
23m
Cleopatra D.C.
OVA
37m
Hurricane Polymar: Holy Blood
OVA
30m
Zillion: Burning Night
OVA
47m
Battle Girl High School
TV
23m
HEYBOT!
TV
23m
G-On Riders
TV
24m
Genocyber
OVA
29m
Malice@Doll
OVA
30m
Iczer Reborn
OVA
30m
Sailor Victory
OVA
27m
Yamato 2520
OVA
57m