Steins;Gate 0

What do you get when you cross a microwave with a cell phone? Apparently, a time machine! Self-proclaimed mad scientist Okarin and the Future Gadgets team now have the ability to send text messages into the past. Will this newfound power be used for personal gain? To change the world? Or for something much more sinister... ? (Source: Udon Entertainment)

The manga, based on 2010 drama CD, tells the story of what Mayuri experiences during the final chapter of the visual novel (anime episode 23) and the lives of Mayuri, Okabe, Daru, Suzuha, and Ruka in the year after Okabe's first failed attempt to save Kurisu in the 1.129848% β world line divergence.