The Gachaverse is actually the aftermath of a Intergalactic war, let me explain:
The Designs of the Gacha characters, the scars, the Eyepatches, and uniforms
The Ratio of Women and Men being 5 women to 1 man
The Gacha word is the fallout of a devastating war, a lost generation, mentally destroyed and missing so much of it's society.
The physiological effects of this where catastrophic, for example the Poor Grammar and the incapability of engaging in any kind of deep conversation, only capable of shallow interactions. This also explains the large number of Rape and abuse in the gachaverse people are unable to form meaningful relationships anymore.
There brains have been tormented by PTSD and the horrors of war, the Intergalactic war also migrated many different species to the planet hense the so called "Strange and over-designed characters" such as Demons and Nekos.
THE GACHAVERSE IS A SIMULATION OF THE DECAY OF SOCIETY PLAYED IN FRONT OF ARE VERY EYES.