Haikane Tenryou (ハイカネ テンリョウ; Haikane Tenryō) is one of two protagonists in High School DXD: A Broken Key. A completely normal boy without anything unique to him at the start of the series, Haikane is a low-class devil that simply follows where the flow takes him. During his younger days, he was quite an avid watcher of anime and drama, which influenced him more than he would like. Due to his younger self's obsession, he aspired to take up piano classes to play his favorite songs. In the story, he makes a large amount of references to real life items such as Sprite, Reddit, and more.