The game is in development at Marvelous First Studio and counts on an absolutely star-spangled cast.
"A brand-new, fast-paced mech action game from Kenichiro Tsukuda is coming to the Nintendo Switch system". Another big name for mecha fans will be Shoji Kawamori of Macross and Escaflowne fame, who's been enlisted to do the concept designs, while character designer Yusuke Kozaki of the last few Fire Emblem games (and Pokémon Go) is on board as well. We also know Ken Awata and Ken Karube will serve as game directors, and that Kenichiro Tsukuda is also involved.
According to Nintendo Daemon X Machina lets you equip a fully customizable mech, or "Arsenal", to destroy powerful enemy forces. You can obtain weapons from defeated foes and swap them onto your Aresenal "on the fly" to adjust your strategy against different sorts of enemies.