KANJI GUIDE
To dance, but the slow turning kind, not the leaping kind. 舞台 is a stage.
Lasting a long time. 久しぶり is what you say when you have not seen someone for a while.
Long life, and the celebration of it. The character on wedding envelopes and New Year food.
上がる is to rise; 向上 is improvement — moving toward better, not just physically higher.
Half of 瑠璃, the deep blue stone. On its own it is used mostly for its sound and its colour.