Glass Bottle and Pearl Box

"I pray, I beg, life and death, my Elena, please take that glass heart." This is what he once said to her, Elena has a box of pearls filled with tears he shed while enduring her hysteria. He can control the ebb and flow of the tide, but he cannot control his own heart. She decided to go to the human world. No matter how many unknown risks there were in this world, she had to go there. Sea Butterfly Elf x Huiyue Mermaid (Lightning protection: The story is mediocre and there are unexpected stacking shields) Concept: life under the sea