Daicon III Opening Animation An unnamed girl watches as the Science Patrol lands their aircraft. A masked individual exits the ship and approaches the girl, entrusting her with a cup of water and a simple task: to water a radish. The girl enthusiastically accepts her mission but is obstructed by a multitude of foes. Faced with waves of unrelenting monsters, mechas, and starfighters, can the young heroine protect the cup of water and make it to the radish unharmed?

Daicon IV Opening Animation Clad in a Playboy Bunny suit, an older version of the same girl takes on new and notable adversaries from around the galaxy. From dueling with lightsabers to surfing the magical sword Stormbringer, there is no shortage of action!

Set to Electric Light Orchestra's "Twilight," the Daicon IV Opening Animation is a grand tribute to science fiction culture, showcasing hundreds of familiar characters in one spectacular bout.

The Daicon III and Daicon IV Opening Animations were produced with the intent of being showcased at the twentieth and twenty-second Nihon SF Taikai science fiction conventions—specifically the 1981 and 1983 Osaka conventions, nicknamed Daicon III and Daicon IV.

Daicon III Opening Animation The 1981 Daicon III Opening Animation was solely animated by the three-person studio Daicon Film—consisting of university students Hideaki Anno, Hiroyuki Yamaga, and Takami Akai. While others were involved in the short's production, there were only three members credited.

Daicon IV Opening Animation The animation's unauthorized use of the Electric Light Orchestra song "Twilight" prevented it from receiving an official release; however, unofficial laserdiscs were produced to pay off the debt of the production.

The production of the 1983 Daicon IV Opening Animation was said to be rigorous, and its completion was on the day of its premier. Nevertheless, the short's reception was overwhelmingly positive and spawned it a favorable legacy. A 2001 edition of the Animage magazine ranks both shorts at number 35 in its Top 100 anime productions ranking.

The twelve individuals involved with the production of Daicon IV would go on to found the studio Gainax, responsible for the acclaimed anime series Neon Genesis Evangelion. Brief moments of Daicon IV can be seen in Gainax's anime Otaku no Video, which is based around the formation of the studio.