Isekaito is on a school trip with his classmates, enjoying his daily life as a normal high school student, when he is suddenly caught up in a death game controlled by a man in military uniform. The weak will die and the strong will survive... but what the man doesn't realize is that there is a powerful former Hero from another world amongst them. (Source: Comic Days, translated)

Three manga adaptations were released by Sega after the release of Valkyria Chronicles II in Japan. Valkyra Chronicles II: Our Only Days is a shojo variation of the manga. (Source: Wikimedia)

Side-story of the main Amnesia. 1. Ukyo-hen: Joker no Sekai \[Kuroyama Mekki\] 1 2. Ukyo-hen: Joker no Sekai \[Kuroyama Mekki\] 2 3. Ukyo-hen: Joker no Sekai \[Kuroyama Mekki\] 3 4. Toma-hen: Diamond no Sekai \[Ouka Mai\] 5. Ikki-hen: Spade no Sekai \[Miniwa\] 6. Shin-hen: Heart no Sekai \[Ioka Wako\] 7. Kent-hen: Clover no Sekai \[Naruse Isa\]

An anthology comic of Juusan Kihei Boueiken by various mangaka.

The manga is set in the first half of the '90s, and centers on the adventure of a group of kids after they make contact with a mysterious being. (Source: Anime News Network)

A manga adaption of the anime "Ranpo Kitan: Game of Laplace". "Yume" ("Dream") is the 1st compiled volume and "Maboroshi" ("Phantom") is the 2nd. Note: Chapter 10, "Hakuchuumu" ("Daydream"), is not included in the chapter count as it exists in a separate volume.

Far future-a devastated world. People lived together in an underground shelter under the oppression of a large corporation, Penfield. Luka, a boy with mysterious eyes and the ability to control what he sees, and Yuri, a servant who follows him. And, the fellows who have individuality groups rebel against the system with their thoughts in mind! Is it hopeless to wait beyond that? Large companies vs. outsiders who have a past, a new sense of science fiction x action!!