Libertines

The term "libertine" (放蕩者, houtoumono) refers to societal outcasts who don't adhere to the accepted morals, ideas, and/or behaviors of society in matters such as family, social order, and even religion in some cases.

Overview
"Libertine" (蕩児, touji; 遊冶郎, yuuyarou, or 色魔 shikima) was a general term used for men with seemingly insatiable sexual appetites, usually to an extreme extent in which they abandoned responsibility and lived in excess of drink, food, and entertainment.

However, as small groups of outcasts started organizing among themselves and forming social groups, terms such as touji and shikima associated with excessive hedonism in men became obsolete, and were instead replaced by the general term houtoumono. Yuuyarou became the dominant word for men who lived with excess abandon.

Members of houtoumono libertine groups included:
 * Yotaka prostitutes
 * Tabiko prostitutes
 * Drug addicts
 * Independent, unmarried women
 * Poor artists and artisans
 * Men or boys close in age in romantic relationships with each other
 * Women in romantic relationships with each other
 * People in polyamorus relationships
 * Racial minorities
 * Religious minorities
 * People with physical and mental disabilities & illnesses
 * People of indigenous (Ainu, Emishi) blood (south of Mt.Osore only)
 * Irogai
 * Atheists or religious skeptics, most notably during the 50 Years' War

50 Years' War
During the 50 Years' War, libertine groups started gaining major traction as people turned away from religion after seeing the destruction of the fighting between the gods, which has been going on many years and brought widespread damage. Religious libertines fled en masse to the North to escape the violence of the war, which disrupted the Ainu communities already living there.

However, as Masumi Kagamine predicted, people were unable to completely let go of the comfort that religion provided and many fell back into worship after the War's end. Social groups centered around religious libertinism soon lost influence, collapsed, and faded back into obscurity.

Significant libertines
Libertines that make an appearance in Pastverse or are prominent figures in their social circles:
 * Masumi Kagamine - sexual and religious libertine, tabiko prostitute
 * Masahiko Tanaka - Irogai libertine, racial minority
 * Ayane Hisakawa - runaway noble, social libertine
 * Shōnagon - Yotaka prostitute