Sweety (睡魔, suima, lit. "sleep demon") is a race of demons. The males are also known as Incubus while the females are also known as Succubus.

In Eushully games, Succubi have a human appearance with bat-like wings and cat ears. They often wear cat paw gloves and boots in combat and use techniques with a cat themed name. They often have a carefree personality and are capable of using sexual magic to deprive beings of their life force. Likely due to the games' targeted consumer, Incubi are seldom encounted by the player.

Some known Sweeties include: