Marian

Unicorns are a species of Centaur monster girl that have a unique relationship with Bicorns. Unicorns are distinguished by their beautiful white coats and the single horn coming out of her forehead. Even though Unicorns are monster girls, it is regarded as "the symbol of purity."

A Unicorn's graceful personality and gentle behavior are that of a chaste maiden. They are symbols of purity, but in a manner befitting of their true nature as a Affectionate centaur family monster; their first kiss is described as nothing short of pure bliss. In the same way as other monsters, they can only reproduce with humans, but unlike other monsters, they never attack. The person they become fond of and choose as their partner are absolutely limited to pure "virgins" who have never been with other women or monsters. They never give themselves to anyone else but their partners, period. Intimate moments with their male or female partners a sacred act, and the fulfillment of the oath between husband and wife, or Wife and wife. Because they possess this sort of nature, they tend to be misunderstood, but just like other centaurs they are extremely affectionate. Unicorns without husbands spend their time dreaming of days of sweet pleasure with their husband or wife-to-be.

Unicorns can use their horns to sense someone's "True Heart". This enables them to see the true nature of a person.

When they swear their oath to their husband or wife, in order to make everything they have dreamed of a reality. They use their horse body to protect their partner, and care for them. If exposed to high amounts of monster energy, their souls will become corrupted Bicorn. Bicorns which, in contrast to the unicorn, is referred to as "the symbols of impurity". They regard indecency as virtue, and desire to live a life even more immersed in pleasure together with their husband and a harem. If left alone for long enough, a bicorn will turn into a unicorn.

Unicorns have access to Light Magic, so much so that a Unicorn's horn is a conduit for their magical powers. If their horn is broken, they are defenseless until it regrows, which can take months.They can cast impenetrable barriers, and powerful healing spells. They can also use this light magic to cast Smite and Banish, which are critically effective against all forms of evil.

This process occurs when the Bicorn's soul expels the corrupted energy out of their bodies and they become pure gentle unicorns. they turn into Unicorns. An individual Bicorn or Unicorn will retain the same memories, but different aspect of their personalities will be expressed.

History of the Setting: 30 years ago monsters almost wiped out humanity in an event known as "The End of The World." Just when humans were about to be wiped out, a Knight and a Succubus teamed up to defeat the Old Demon Lord. There they defeated him, and the succubus became the new Demon Lord. Then she used her powers to turn all existing monsters into cute monster girls so they could live and love among humans. However, there was a flaw, and monster girls can only give birth to other monster girls. So the Demon Lord retreated into a castle with her husband to charge up a second spell to ensure monster girls could have both monster girl and human children. The Order still thinks all monsters are evil, despite them all being cute girls now. The Order is an anti-monster political faction.