少年少女カメレオンシンプトム (Shounen Shoujo Chameleon Symptom)

Background
「During the 21st century、a mysterious symptom started to affect many people.」 "Boy and Girl Chameleon Symptom" is an original song by Neru. It was uploaded to YouTube on December 17, 2017. The lyrics are vague and open to interpretation. The boy in the video is named Leo.

This song has entered the Hall of Fame. It is featured in the albums Supernova 7, Shousei Gekijou, and Sekai Seifuku.