The Demon Defense Force is holding a training session in Shangri-la: an alternate space where time flflows difffferently from reality. Though Yuuki spends his days jerked about between difffferent ladies in an intense cycle of being ridden and rewarded, he is unsettled by the clear disdain coming from Varvara Pilipenko. Just why does the commander of the 8th Squad seem to loathe him? The two had better work out their difffferences fast, because unbeknownst to all, one of the Eight Thunder Gods has taken Bell's place and infifiltrated their ranks!