Tatsuya Kitani is a singer-songwriter from Japan. He started releasing his music online around 2014, and in 2017, his high taste in music led him to become a solo artist while also providing music as an author. In July 2023, he released “Where Our Blue Is,” the opening theme song to the animation series Jujutsu Kaisen “Hidden Inventory / Premature Death”. The song has created a buzz ever since the series began and has topped 23 digital charts.