Cujo

Rintaro Okabe is a self-proclaimed "mad scientist" who believes that an international scientific organization named SERN is conspiring to reshape the world according to its own interests. He and his friend Itaru Hashida inadvertently create a gadget able to send messages to the past.

Devil King Sadao is only one step away from conquering the world when he is beaten by Hero Emilia and forced to drift to the other world: modern-day Tokyo. As "conquering the world" are the only skills the Devil King possesses—and are obviously unnecessary in his new situation—he must work as a freeter to pay for his living expenses!

In this lovely coming of age tale we see the young and adventurous Pico explore himself and his future during one mysterious summer. The series is composed of three OVAs that will keep you in tears and wanting more, each tale tells one story of Pico's summer as he tries to find who he really is and the conflicting nature we see between the departure of childhood and the entering of the teenage years.