ツインズフェアリー

Fairies generally live and play in groups. If a man is caught by a group of fairies, they will work together to play with him. Very eager for interesting things to play with, it’s said that if a man is captured by multiple fairies, he will be forced to remain their plaything for a long time. Once made into a toy, the fairies will care for him like a pet. Even though they aren’t hostile towards men, their innocence and desire to play is just as dangerous. [From In-game Monsterpedia]