What is Future manga?
Anime that fall under the future category are the ones that have a society that could have originated from ours. In most cases it should go hand to hand with sci-fi since we expect the future to consist of advanced technology, however, in the case where it's explicitly stated in the story that the anime takes place "x years into the future", the state of technology doesn't matter as long as it's long into the future. The anime can be set in an alternative universe not tied with our own, as long as it has a futuristic feel to it.This category sports quite a lot of anime, mostly stemming from SciFi, but not necessarily only from there.