Life Stolen,Brother and Fiancé Regret Everything

In the undersea realm, mermaid princess Aurelia is confronted with the apocalyptic collapse of her kingdom. She unleashes the full power of her unique "Mermaid's Heart" to rescue all her kinsmen, and successfully heals the fatal wounds of her fiancé Orion and her elder brother Caspian in the process. However, the feat drains every trace of her life force completely, and she plummets into the lightless deep-sea rift, disappearing into the endless crushing darkness. The low-rank witch Lira takes advantage of the chaos when all surviving merfolk lie unconscious: she steals the Poseidon's Trident, and claims all of Aurelia's world-saving accomplishments as her own. When Orion and Caspian wake up, the first sight that greets them is Lira holding the sacred Trident, so they mistakenly conclude that she is the one who pulled the entire clan back from the edge of extinction. From that moment on, Lira seizes every single thing that belongs to Aurelia — her royal identity, her glorious reputation, her fiancé, and even her own brother. All the merfolk kneel and worship Lira as the savior goddess, while Orion and Caspian fall entirely under Lira's bewitchment, tangled up in a messy, ambiguous dynamic with her. The real savior Aurelia, meanwhile, is surrounded by thousands of ravenous piranhas in the dark abyss, her blood diffusing into a thick swirling red mist across the seawater. She can only watch helplessly as her fiancé and her beloved brother grow intimate with Lira on the sea surface high above, while all her people bow and pay homage to the imposter. Her entire life has been stolen from her without a trace. But this is far from the end. When Aurelia rises back from the rift and the full unvarnished truth finally comes to light, her brother and former fiancé will be torn apart by utter, all-consuming regret.