@Jack on this site many tags are wrong, for example "no.6" is not even marked as shounen ai despite there being kisses, declarations of love etc. so, from the first chapters we know that the mc was in love with his friend, and even now, that he has realized that he's dead, he still worries, while the demon in Hikaru's body feels emotions that he doesn't understand. To me more than bl (because I don't think there will be any spicy scenes) it still seems that there is still something, it will probably be shounen ai - mystery
@Riikah I agree. Even if not officially recognised as BL/shounen-ai, their relationship is not too ambiguous to conclude such themes of romance are totally absent from the narrative. The main genre is thriller/mystery/supernatural, though within such genres, romance may occasionally surface. I think it would be a shame to abandon such a unique story because of a technicality.
