Level E

Along with its short length and more realistic art style, the story of Level E focuses much more heavily on humor than Togashi's more famous series Yu Yu Hakusho and Hunter × Hunter. Serialized for sixteen chapters in Shueisha's shōnen manga magazine Weekly Shōnen Jump from 1995 to 1997 and collected in three tankōbon volumes. A 13-episode anime television series adaptation, directed by Toshiyuki Katō and produced by Studio Pierrot and David Production, aired on TV Tokyo in 2011.

Earth has been populated by thousands of aliens from all over the galaxy. While all the other aliens are aware of their presence, it is a secret only from the Earthlings. Baka, the prince of the planet Dogra, crash lands on Earth and loses his memory. He forcibly moves in with Yukitaka Tsutsui, a first year high school student who had just moved out on his own. The normal life he once knew is quickly pulled away as he becomes the target of the prince's torment.

Prince Baka (バカ王子, Baka-ōji; lit. 'stupid prince') Voiced by: Daisuke Namikawa (Japanese); Vic Mignogna (English) The effeminate-looking first prince of the planet Dogura. He has an exceptionally high IQ and has little interest other than using it to torment those around him for his own amusement. His real name is Baka Ki El Dogra (バカ＝キ＝エル・ドグラ, Baka Ki Eru Dogura), but everybody refers to him solely as Prince or Prince Baka. Yukitaka Tsutsui (筒井 雪隆, Tsutsui Yukitaka) Voiced by: Yoshimasa Hosoya (Japanese); Micah Solusod (English) High school student and the Prince's roommate. Plays baseball. A former punk. Miho Edogawa (江戸川 美歩, Edogawa Miho) Voiced by: Satomi Akesaka (Japanese); Lindsay Seidel (English) Yukitaka's next door neighbor and school mate. Miho's father is a researcher studying alien life on Earth. Has been taught to notice hidden cameras, tracking devices and secret guards. Captain Craft (クラフト隊長, Kurafuto-taichō) Voiced by: Takehito Koyasu (Japanese); Jason Douglas (English) Captain of the Royal Guard Army. He is in his tenth year. His top priority is that of the Prince Baka's bodyguard. Fifth year guard, Sado, and first year guard, Colin, work under him.

Level E was written and illustrated by Yoshihiro Togashi, who had established himself as a prominent manga artist with his popular action series YuYu Hakusho. When the decision was made to serialize Level E, Togashi had only created the first chapter. Because the story involved the protagonist as an alien changing each chapter, he titled the manga "Alien Crises". He quickly changed it to its final name after being told the former title was too explicit. After renting a videotape called Level 4, he affirmed to himself that he should name the series using the first English language letter of the word "alien". He was informed that the first letter was "A" and not "E", but he replied that he always associated the term with E.T.. Togashi has stated that he is a fan of the horror genre of films and has cited visual effects designer H. R. Giger (of the Alien franchise) as a major influence. Togashi based the setting of Level E on his own hometown of Yamagata with close attention to detail. For the humor, Togashi took inspiration from the gag manga Gaki Deka.

Written and illustrated by Yoshihiro Togashi, Level E was serialized monthly in Shueisha's shōnen manga magazine Weekly Shōnen Jump from October 2, 1995, to January 15, 1997. A total of sixteen chapters were collected into three volumes tankōbon. The first was released on March 4, 1996, the second on October 3, 1996, and the third on May 1, 1997. In addition, Level E was re-released as part of the Shueisha Jump Remix series of magazine-style books, with two volumes being released in 2009. It was also re-published by Shueisha into two bunkoban volumes released on September 17, and October 15, 2010. Level E has been translated into Chinese, serialized in the magazine Formosa Youth, and released in volume format by Tong Li Publishing in the Republic of China (Taiwan). It was also published in Brazil by Editora JBC, in France by Kazé, and Spain by Planeta DeAgostini Comics.

A 13-episode anime television series adaptation of Level E was produced by TV Tokyo, Studio Pierrot and David Production and directed by Toshiyuki Katō, with Jukki Hanada handling series scripts, Itsuko Takeda designing the characters and Yang Bang-ean composing the music. The series aired on TV Tokyo from January 11 to April 5, 2011. The opening theme song is "Cold Finger Girl" (コールドフィンガーガール, Kōrudo Fingā Gāru), performed by Chiaki Kuriyama, while the ending theme song is "(Yume): Mugennokanata" (｢夢｣〜ムゲンノカナタ〜; lit. 'Dream: Beyond Infinity'), performed by ViViD. Crunchyroll simulcast the series on its streaming website in other parts of the world one hour after each initial TV Tokyo airing. Funimation announced that it had licensed the series at Katsucon 2012. The anime sets the story in the modern era, with flat-screen TVs and smartphones, which were not available when the original manga was released, appearing in the story. All chapters except for the final chapter of the manga, "Honeymoon...!", were adapted. The narration was done by Fumihiko Tachiki.

Several pieces of merchandise that tie into the anime have been released. These include CD singles for the opening and closing themes, apparel, and towels. Aniplex released Level E on DVD in Japan beginning on February 23, 2011, concluding with the sixth volume on July 27, 2011. It included as between two and three episodes apiece, as well as extra features.