Sky’s mystery encounter

Amora “Cielo” kinagure was a high school who for the most part of was normal but he lives in a town not soo..normal. And every thing was even more weird when he met Yuki. A guy who he has..no idea to describe..
Also once in awhile the themes change but the story goes on...but in the end they always find each other again even though one rembers and the other doesn’t.