. . "Ikuto's Violin"@en . "Aruto Tsukiyomi, left behind this violin for Ikuto Tsukiyomi, his son. As the series progresses, it is revealed that the violin holds mysterious dark powers, and a Black Egg inside. In the anime, Easter workers increase its power by injecting it with more X-Egg energy. In one episode, Ikuto plays his violin with his bow upside-down when playing for \"Black Diamond\"."@en . "Aruto Tsukiyomi, left behind this violin for Ikuto Tsukiyomi, his son. As the series progresses, it is revealed that the violin holds mysterious dark powers, and a Black Egg inside. In the anime, Easter workers increase its power by injecting it with more X-Egg energy. In one episode, Ikuto plays his violin with his bow upside-down when playing for \"Black Diamond\"."@en .