As the title of this series suggests, it centers around a fantasy romance between Akira Tounome, who is invisible, and Shizuka Yakou. A romance between an invisible man and a woman who can’t see him is interesting. Tounome owns the detective agency. Though interesting for Yakou with her being blind, her other senses are heightened. The first volume does a good job showcasing them. The volume ends with the dating. Though you wonder what the aim for the series is from this point.
Overall, the side cast seems pretty solid. Luna Jarashi is the muscle in the agency, and her chemistry works well with Yakou. While Kikira centers around intelligence gathering, so he will have interactions with both Tounome and Jarashi. He has a kind heart even if he has difficulty admitting it at times.
The blue background definitely gives this manga a unique vibe. Curious about the reason for it.