KANJI GUIDE
The sky, and heaven with it. 天国 is paradise; 天気 is the weather.
Beauty, plainly. The character is a big sheep — in the old writing, a fine one.
Summer. 真夏 is the height of it.
The only one. 唯一 is unique; 唯我独尊 is standing alone above all.
Half of 瑠璃, the deep blue stone. On its own it is used mostly for its sound and its colour.