Yui, a girl who lives in a world of solitude.
No matter where she went, she felt like she didn't belong and she felt lonely.
Her only pleasure is going to the rose garden near the facility where she lives.

When Yui was spending time with herself in the rose garden as usual, a
beautiful man appeared in front of her and suddenly kissed her.

"Found you," he whispered, and right after that, he bit her on the nape of Yui's neck.

"I'm glad you haven't changed your love for roses."

--I didn't know him, but he knew.