Titus and Quinn

While twin sivani seem very similar to humans physically, they have some differences that distinctly separate both their physiology and culture. Without exception, all sivani have a twin. They are born, live, and typically die together. Sivani are seen as a single entity by other sivani, and it’s not uncommon for them to refer to themselves as a single person.

Culturally, this brings about other strange differences. When sivani fall in love, it is always in pairs, meaning that their relationships are always in sets of four. They mate in pairs, and the resulting pregnancies are almost always simultaneously successful, or simultaneously a failure. This means that despite being from two separate biological parents, the offspring is always a set of identical twins, born in pairs, one from each female.

While a pair of twin sivani do not seem to truly share a single consciousness or a telepathic link, they are as close to being one person as two minds can be. In fact, twin sivani seems to be able to survive just fine without their twin, despite an overwhelming cultural stigma against it. Those who separate from their twins are typically voluntarily treated as pariahs, expelled from their homes and forced to live in isolation. However, very few sivani ever choose to leave their twin voluntarily. More often than not, a sivani is only without a twin if their other half met some horrible fate.

When a sivani is left alone, the solitude tends to drive them mad. It seems that they are built for a life of close companionship, insomuch that when a sivani dies from old age, it is expected of their twin to commits ritual suicide. Religious customs amongst their people believe that their souls should be sent together to the afterlife.

The reasons that twin sivani become espers are as varied as humans who opt to be summoned to other realms themselves. Each have their own agenda, known only to them and their twin. One thing that is always in their summoning contracts, however, is that they not be separated from their twin. This is usually seen as a bonus to summoners, as they get the assistance of two for the price of one.