If you're looking for anime similar to Rainman, you might like these titles.
In order to save her brother and nephew who have been kidnapped by a mysterious religious group known as the Genuine Love Society, Juri and her family cast a spell using a stone hidden by her grandfather to enter the world of stopped time known as Stasis. However, when they infiltrate the kidnapper's base, they're met by other people who can also move about freely. With grotesque creatures lurking about, will they be able to escape the parallel world and return to their normal lives?!
During the month of October of his third year in high school, Koyomi Araragi is introduced to a transfer student named Ougi Oshino by his underclassman Kanbaru Suruga. Ougi tells Koyomi that she has something she wishes to consult with him. When she draws the map of Naoestu High School, she finds something peculiar on there. This discovery reveals a tale that wasn’t meant to be told, and this makes Koyomi’s high school life totally different. This is the story that brings to light “what” makes Koyomi Araragi. This is the story that reveals the “beginning” of everything.
March 1999: Mikiya Kokutou meets "Shiki Ryougi" again at the same place where he met her for the first time four years ago…
A divergent continuation of the original Steins;Gate ending, Steins;Gate 0 explores an alternate worldline where Okabe abandons time travel. While attempting to forget past traumas and get his life back on track, he meets an AI that re-opens old wounds.
When Shion was a young girl, her parents were brutally murdered; and the sight of their dead bodies in a pool of blood caused her to lose her voice. Years later, Shion is now a young woman who was raised by Shinji Yasuoko, a professional Shogi player, and his wife. Shion has become a Shogi player just like her adopted father, and is working her way towards becoming a female Meijin – a master of the sport. With powerful opponents and sinister strangers around every turn, and her parents’ killer still on the loose, Shion’s path to glory has never seemed more challenging!
Follows Kimihiko Kimitsuka, a young man who four years ago became the assistant of a mysterious detective known as "Siesta" on a hijacked airplane. Together, Kimihiko and Siesta went on mind-boggling, globe-trotting adventures while combatting a secret organization, but all of that came to an end when they were separated by Siesta's death. In the present day, Kimihiko tries to return to an ordinary, boring life as a high school student, but things are never that simple, even though the detective is already dead.
When Ruka was younger, she saw a ghost in the water at the aquarium where her dad works. Now she feels drawn toward the aquarium and the two mysterious boys she meets there, Umi and Sora. They were raised by dugongs and hear the same strange calls from the sea as she does. Ruka's dad and the other adults who work at the aquarium are only distantly aware of what the children are experiencing as they get caught up in the mystery of the worldwide disappearance of the oceans' fish.