Society
Sexuality
Selvageist are created through intention and belief; they are not "born" and do not reproduce sexually. They choose their gender for themselves, and what pronoun they want to use.
Selvageist don't form sexual relationship with others, but they can form strong friendships with other Selvegeist, or even other creatures (even humans).
Social Interactions
In general, Selvegeist are solitary and usually prefer to stay in their territories. However, it's not unknown for Selvageist to have companions, and visit eachother's territories, and in some instances even sharing 'owenership' of two territories.
While it is extremely rare for human-Selvageist interactions, it is not unheard of. They have the ability to communicate with a varity of animal life through body language and non-verbal cues, and some have the Unique Ability of psychic powers which lets them communicate with the human world. Depending on the demeanor of the individual, these interations can go either way, but generally Selvegeist aren't the biggest fan of people. However, it really depends on personal experience and observations.
Age
Selvageist do not age in the traditional sense. There is no "juvenile/young adult/adult" stage in their lifecycle, and instead their 'age' is determined by how long they've existed on the earth.
It's not always obvious a Selvegeist's age by their appearence alone - an individual who has existed for thousands of years can look just as old as one who has existed for a week.
While there is no inherit physical difference between ages, with time come experience. The older the Selvegeist, the typically more experienced they are with their Unique Abilities, interactions, and methods of guarding their territories.
Behavior
Once they come into existence, Selvageist pledge themselves to a section of land, usually where they spawned, ranging in size from 30 - 300 hectares. Selvegeist are very territorial and constantly roam their territories, looking for trouble. They are highly protective in nature and are the guardians of their territories, from animal/plant life, to other ecological factors. They care deeply for the enviornment and will do anything to protect it.