Information that will not have great detail in the story.
Sakura.
Sakura lost her family to Orochimaru. Taken as his personal slave she has the affinity for flora or plants. She heals witches taken into the slave trade for Orochimaru so that the man can sell them faster than most other traders.
Flora caster
A Flora caster has power over plants and flowers giving them the ability to control them. Flora casters have the Rare ability to heal using the flora energy from the earth. Some people say being healed by a flora caster feels like the sun shining on them and many say you can smell grass and flowers.
Kin, Zaku, Dosu.
This sibling trio is are witch hunters. They offered them selfs to the vampires so they would not face slavery and have their powers taken from them. Kin the eldest took her brothers to Uchiha Manor to offer services. She had seen many families ripped apart and killed and she refused to let that happen to her and her brothers. After both of their parents died of illness she would do anything to keep them together
Witch Hunters
Witches who hunt witches, when a which offers themselves up to become a witch hunter a blood pact must be made with the Uchiha family. This pact makes it impossible for the witch hunter to use his powers against only vampires. To seal the pact the witch hunter must kill a witches child in front of her. Usually done in a court opened for other vampires to watch the mother is chained to the floor while the new witch hunter kills the child in front of her. Kin and her sibling did this together. Three children, three mothers. Kin will never forget the screams.
Spirit Caster
A witch who has an Affinity with all earth elements. Only one other witch had this power and his name was Jiraiya Namakaze. Who died almost a century ago before vampires made way into the world. There is no rhyme or reason for a spirit caster it is an anomaly and totally random.