Double birth/double purity, sweet articles, short stories.
He lay in the house, feeling the familiar bed underneath, and felt at ease. He's alive!
Whenever he gathers people to look for immortals who have similar magical power to him, they are disrupted by his restless little apprentice.
"Looking for someone with the same magic power as me..."
"Master, Master, Master! Here comes a batch of fine clothes!"
The master who always had his own way was just about to refuse when he remembered the scene in his previous life when his little apprentice fell into his arms.
"... Let's go, I will take you away personally."
Concept: Two-way secret love is always beautiful