Model of the latest W-Engine that is embedded with a supercomputer core. This W-Engine can compile operating code for machines at an astonishing speed, or quickly collect battlefield data to provide support for the whole squad. Of course, for Grace, this W-Engine is just a little toy for her to communicate with her "silicon-based children."

"Looking carefully... you're handsome in your own way! Oh, it says in the manual that once it's sealed, it shouldn't be opened... Hmmm... Well, how would we know if we don't give it a try?!" — Grace, suddenly enthusiastic while holding the engine in her hand