"1000 randomly selected humans from countries all around the world will be brought to a parallel world where all their actions will be broadcast to the whole world."

God appeared suddenly in the world and randomly selected 1000 human beings...

High-school student Hikaru, ever since his childhood friend Nanami had been chosen as a part of the 1000 humans, has been going around collecting information about the parallel world for Nanami's sake, in order to prepare Nanami to be transferred to the other world safely. On morning of the day of transfer, as Hikaru awaits to enter Nanami's home, something unimaginable happens...

As more people tune into the isekai life streams, points can be earned to gain magic, items, etc. which then can be used to kill monsters!

(Source: Square Enix, translated)