The story
A thousand years old, a Supreme Immortal, and treated like a useless house husband.
Logan Bale is an immortal who has been alive for a thousand years. When his disciple was dying, Logan swore to look after the disciple's family for three years. Keeping that promise means marrying his disciple's granddaughter, and her family answer him with nothing but contempt and cruelty. Logan takes all of it calmly and never lets it shake him. He's made a promise to himself as well. When the three years are up, he leaves and doesn't look back. The family treating him like dirt has no idea who they're about to lose.