My Quadruplets' Dad Is Zeus

At eighteen, Elena spends one night with the mysterious Zeus and later gives birth to four mythical children—a mermaid, an elf, a chimera, and a demigod. Three years on, the kids track Zeus to Loren City and wake him, revealing he has four heirs. When Elena is humiliated and framed by her rival at Olympus University, Zeus learns the truth and vows war on anyone who harms the mother of his children.