Saiai Devil

Its about a girl named Ai Sugawa (16) .. she had a deep awaited love and fell for someone who deems to be unreachable Naoya Senpai .He is a star in the Track and Field club and quite popular.as she was going to confess to him to help her a demon named aya the beast descends saying '' its been 11 year Ai'' Ai remains shocked perplexed about who he is with dark black wings ! !!! what now ?