Takuya Arima is a young student whose father, a historian who has conducted various researches, disappeared recently. During a summer vacation Takuya receives a peculiar package from his missing father, along with a letter containing information about the existence of various parallel worlds. At first Takuya doesn't take it seriously, but soon he realizes that he possesses a device that allows him to travel to alternate dimensions. Is his father alive, after all? If so, where is he? (Source: VNDB)

Second season of Infinite Stratos.

A nonsense comical mystery. Harumi Kazuhito is a high school boy who loves books and is a fan of novelist Natsuno Kirihime. One day, he finds Kirihime writing at a cafe, about to be shot by a robber. He protects her from the attack but is killed instead. Through the supernatural power of a book-worm, he is reincarnated as a dachshund dog. Kazuhito (as a dog) writhes in a painful bookless life, when a sadistic woman carrying a pair of scissors offers him help. She is Kirihime herself. (Source: Dog and Scissors Wiki)

A courageous young man tries to find the only person who can save his planet from the most terrifying beast in the universe—the great white whale Moby Dick—in this futuristic anime adventure set in 4699. But locating the outlaw Captain Ahab and his illusory crew of whale hunters and persuading them to put an end to the leviathan's long reign of terror won't be easy. Will Ahab take up the challenge one more time?