Lagoon Engine

Lagoon Engine revolves around two characters: 12-year-old Yen, and 11-year-old Jin. While Yen's intelligent, calm, and thinks tactically, Jin's hotheaded and rushes into battle.

The Ragun family is dedicated to defeating ghosts, evil spirits, etc. - known as 'Maga' Yen and Jin just happen to the successors of the family, and they have to fight Maga too. In short: Yen and Jin are Gakushi.

Both Yen and Jin have Maga - though not evil maga. Yen's Maga is called Koga, while Jin's maga is named Sora. Koga is good with gathering information, analyzing and remembering things, though he's extremely bad at attacking. Sora has no intellectual power whatsoever, but his attack power is very high.

Yen Ragun (等軍焔)

Intelligent, and good with making inferences, as is Koga. A good gakushi and often teams up with Jin while fighting maga. As a perception type, he can understand Maga. As shown in the second book, he hates slimy things, so he hates natto (fermented soybeans). He enjoys swimming and he is in the 6th grade, the last grade of elementary.

Jin Ragun (等軍陣)

Yen's younger brother. Almost the complete opposite. Hotheaded and rash - seemingly not very bright either. However, he's still loyal to his brother, and loves him very much. He's never quiet and hates peppers. He is just one grade behind Yen as well as age. He calls his brother "Yen-nii".

Ayato Housui (峰水綾人)

Ayato is related to Yen and Jin. Apparently, he's their cousin. He knows of Yen and Jin being Gakushi, and isn't bothered by it at all. He's quiet and polite. His nickname is "Aya". Yen almost thought he was a girl after forgetting what happened when he first encountered him in his house.

Miki Kirishima

Miki is a girl in Yen's class who has not attended school for two years because of a deadly disease that confines her to a hospital. Her dead dog, Tom, was led back to her by Yen and Jin, and is slowly becoming a maga. Yen thinks she'll become a Gakushi.

Erei Moribayashi

A friend of the Raguns. Loud, and rather hotheaded. She doesn't seem to know of the Raguns being Gakushi. She's taken a liking to Ayato.

Shintaro Nagasaku

28, single, and works as an editor for Yen and Jin's mother. He seems to live at the household, and is rather strange. In fact, he likes to wear skirts. But he is very superior when someone is in need of help.

Akane Ragun (Mari)

Akane is a very popular author. Her works never meet the deadline, but the books still end up being ridiculously popular. Although her true name is 'Akane Ragun', her penname is 'Akane Mari'. She's the mother of Yen and Jin.

Hideaki Ragun

Hideaki is the husband of Akane Mari and the father of the Raguns. He's a very experienced Gakushi, and extremely powerful.

Suguru Mikami

Suguru is a gakushi of the Mikami. The Mikami is a 'branch' of the Ragun. He appears to be the silent type at first - strong, cool and collective - but that's not all that there is to him. He hates being called "Branch Family" and Jin for calling him that. Besides that, it's very possible for Suguru to be nerve-wracked.

Koga (Maga)

Yen's maga companion. Koga cares for Yen very much, and reflects on Yen: Koga is intelligent, and makes a good team with Sora - Jin's maga. However, Koga lacks in attacking.

Sora (Maga)

Jin's maga, and also seems to have as much energy as Jin. Sora has no intellectual power whatsoever, but his attack power is very high.

Shinno Zai

Shinno is assumed to be a Kamen Kugutsushi, which is the enemy of the Gakushi. He attends the same school as Ayato, but Ayato has no idea that Shinno's Yen and Jin's enemy. Not much is known about Shinno.

Hodou

Hodou is Shinno's servant. He calls him master and does his bidding. He attends the same school as Ayato as well. Not much is known about Hodou, either.

Lagoon Engine Einsatz (ラグーンエンジン アインザッツ, Ragūn Enjin Ainzattsu, romanized as Lagūnenjin Einsatz in Japan) is a Japanese manga series written and illustrated by Yukiru Sugisaki that has appeared in Newtype USA since October 2004. In July 2005 an announcement was made that ADV Manga would be distributing the series as graphic novels starting November that year;[1] one volume was released. It has been suggested that this series is related in some way to the manga series Lagoon Engine by the same author, but no official statement has been made by the author or publishers to support this idea.

Plot

Scan from Newtype USA

Daisuke Kataoka writes of the series,

An unknown world in the distant past... The people of this ancient world once prospered in the warm embrace of the gods, but they forgot those who blessed them and filled their hearts with greed. Their vulgar hubris made a mockery of the gods, forcing them from their place in the heavens. Now, the gods are no longer kind. Raining death and destruction upon the people, these fallen deities threaten to consume the world...[2]