Alien 9 Next
エイリアン9ネクスト
Prequel
Alien Nine
Alien 9· エイリアン9
manga
70
72
72
In the future, alien invasion is a daily occurrence and everyone must be prepared. Elementary School #9 has assigned three students to fight off the extra-terrestrial threat.
Prequel
Alien Nine Emulators
Alien 9: Emulators· エイリアン9-エミュレイターズ
manga
The girls have finally graduated 6th grade and are now in Junior High. There's a new girl in town and she seems to be hosting an entirely different kind of alien. (Source: Anime News Network)
Prequel
Alien 9 Special
エイリアン９スペシャル
manga
A short special released in the Champion Red magazine during 2003 about Yuri and Monami.