The Billionaire's Belated Regret

Liora Wade traveled across time for Alistair Yates, witnessed him proposing to Serena Sterling when she was pregnant. This failed relationship left their son Leo Wade terminally ill. To save Leo, she returns, accepting to be hurt by Alistair Yates a hundred times. She disappears after enduring all hundred instances of pain. Alistair Yates uncovers the truth, wakes up to his mistake, atones for his sins, and is left with lifelong regret.