"If everyone betrays you... It doesn't matter, I will always love you."
"This world will not collapse without anyone, but without you, my world will only be dark."
His world has light because of one person, and he wants to chase his light. Because he is the light, he wants to show his best side to his light, even if his light gradually loses its edge.
Concept: The world is not dark, there are always people who care about you silently