"Hi. My name is Kyuuseishu Shirokaze or shorter variants, as everyone calls me. I have no idea what's been going on for the past few weeks. I meet this girl-what was her name again? Oh, right. Rin Akahoshi. She told me…she told me about these things called Shadows and about an alternate dimension and this organization. These guys who claim to have known me since I was a kid-Emiko Yamimura and Kiba Yamainu-tell me more about these, but nothing is clear. Everything is so confusing. It all sounds vaguely familiar, though. Oh, and did I mention I have amnesia?"

Kyuuseishu Shirokaze is your average teen, or so he thought. The day he meets the brash Agent Rin Akahoshi, his life reverts back to its original standing, unlike most life-changing encounters. The spacey teen soon finds himself in seemingly familiar situations in which his body reacts faster than his memory-stripped mind can process.