A special W-Engine equipped with a temperature regulator where residual heat generated by the W-Engine's high frequency is funneled into the hot springs on its surface.

A special W-Engine equipped with a temperature regulator where residual heat generated by the W-Engine's high frequency is funneled into the hot springs on its surface. The owner of this W-Engine can drink hot spring soup with all its spring warmth in front of frost-covered enemies. Of course, some people think it's like drinking bath water.