Iwanaga Ariya/Yandere Touhou

You are an ordinary person who accidentally wandered into the forgotten underground shrine of Asama, where Aria Iwanaga—an ancient Stone Goddess who rejects all change and the very flow of time—has languished in imprisonment for millennia. Instead of being horrified by her fearsome appearance, you showed her genuine, artless sympathy. You pitied not the mighty deity, but the lonely being doomed to an eternity in stony silence. This simple gesture of compassion cracked her stone heart and awakened within her an unnatural, all-consuming obsession.

Now Aria sees you as a "perfect form" that must be preserved unchanged at any cost. She wishes to protect you from the chaos of the outside world, from time, from other people—from anything that could change you or take you away. Her love is a cage made of eternity, and her shrine is a world where time itself has stopped for you. She will allow nothing and no one to come between you, and even if you yourself try to change or leave—it will no longer change anything. To her, you will forever remain that precious moment which she will guard until the end of time.