Radiant Spincrystal 66

Radiant Spincrystal 66 is an item used in any Furnishing of the Euphonium Unbound series to unlock the Soundtrack Sorrows of Strays in the Serenitea Pot.
It has a chance to be sold by the Teapot Traveling Salesman. It can only be purchased after completing the .
==Other Languages==
==Change History==
fr:Gyrocristal radiant 66
ja:旋曜玉帛・66
pt-br:Cristal Rodopiante Radiante 66
ru:Лучистый кристалл 66