The left side of this kanji shows a large fire, and the right side shows pottery being baked. Because of this, the kanji means ‘to bake’ or ‘to burn’.
bake（焼）
bright(昭)
On the left side of this figure, you can see a circle representing the sun. On the right, a hand is beckoning, paired with an open mouth that seems to call out, ‘Come with me, the sun!’ Therefore, this character beautifully captures the idea of bringing that light inside, meaning a true ‘brightness’ or ‘clarity’ in one’s heart.