Gekkou Utsukushi (美し=月光, Utsukushi Gekkō) is a Shinigami/Unknown being hybrid and a major character in "A Certain Unlucky Person". A mysterious individual, Gai first meets her in Fifth Release- Reunion. She looks identical to Kōzuki Yoshi, the Human girl that Gai fell in love with several hundred years ago. Kōzuki was the one to curb Gai's bloodlust due to his origins thanks to her unique reishi patterns. Some time later, Kōzuki died after she nursed a dying Gunha Teishin back to health. Her death had affected Gai greatly, with Gai becoming colder and hating humanity. She had reincarnated as Gekkou in the current timeline. A fey and otherworldly young woman, Gekkou is in love with Gai. Her older sister is Hizashi Yoshi.