説明書

The only one. 唯一 is unique; 唯我独尊 is standing alone above all.

The hiragana え was made from 衣. Clothing in the old, plain sense. The shape is a robe with sleeves.

弘める is to spread a teaching. The character in 弘法, the great teacher Kūkai.

Half of 瑠璃, the deep blue stone. On its own it is used mostly for its sound and its colour.