Invade the Other Dimension

Pan-dimensional alliance, community of destiny. (Including but not limited to dealing with world wars, nuclear wars, apocalyptic crises, alien invasions, mutant disasters, alien raids, and most destructive internal strife.)
When the coin was thrown into the air, the gears of fate had begun to turn, and nothing could stop.
In the future, there is only a thorny road accompanied by life and death.
No matter how much blood and life are sacrificed, only to pursue a better future.
PS1: Inspired by Fantasy Self-Defense Forces and a novel of the same type at a certain point.
PS2: The current world is "Blood Attack"
PS3: Has experienced the world "Slayer", "Rebellion のルルーシュ", "Muv-Luv", "Irregular at Magic High School", "GATE & Goblin &?" ? ? ” (guest appearance by the Black Beasts), “IS”
PS4: This book is purely fictional and must not be linked to reality.