Legend has it that there are countless monsters living in that mountain. They have been alone for thousands of years, just waiting for the arrival of the only person.
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During her high school graduation trip, in that paradise, Longqin met the legendary "monster". At first, she thought he was just an innocent and cute boy, but unexpectedly, she fell into an irreparable situation, and she has been trapped in it since then and has been unable to extricate herself.
He thought he was just an ordinary boy, but he was the king in charge of the monsters. After his identity was revealed, his once gentle and beautiful "brother" completely turned into a manic monster, coquettish and powerful. What will be the final result?