鳥籠の聖女は愛を知り、そして病んだ。

“What happens when a Saintess, who knows nothing of love, comes to know it? She becomes a yandere.”

In the kingdom, there lived a man named Laurent, often labeled as a failure.

Born to excellent parents, he, however, possessed no remarkable talents of his own.

The only thing he could boast of was his immunity to epidemics, a trait he had since childhood.

Yet, one day, he discovered a mysterious door.

Beyond that door was a beautiful woman… She was known as a Saintess.

Why was she in such a place, and how did he find her?

When Laurent learned the answers to these questions, he also discovered the hidden power within himself.

And the Saintess…