Apparitions, oddities, and gods continue to manifest around Koyomi Araragi and his close-knit group of friends: Tsubasa Hanekawa, the group's modest genius; Shinobu Oshino, the resident doughnut-loving vampire; athletic deviant Suruga Kanbaru; bite-happy spirit Mayoi Hachikuji; Koyomi's cutesy stalker Nadeko Sengoku; and Hitagi Senjogahara, the poignant tsundere. Monogatari Series: Second Season revolves around these individuals and their struggle to overcome the darkness that is rapidly approaching. A new semester has begun and with graduation looming over Araragi, he must quickly decide the paths he will walk, as well as the relationships and friends that he'll save. But as strange events begin to unfold, Araragi is nowhere to be found, and a vicious tiger apparition has appeared in his absence. Hanekawa has become its target, and she must fend for herself—or bow to the creature's perspective on the feebleness of humanity. [Written by MAL Rewrite]

After years of conflict, humans and monsters have settled their differences and are now at peace. This post-war era led to the foundation of Lindworm—a town which has since become the focal point of racial harmony. As a human doctor specializing in monster biology, Glenn Litbeit runs a small clinic alongside his partner, Saphentite Neikes, who is a half-snake monster known as a lamia. He uses his knowledge to tend to any monsters who seek his aid. Whatever affliction, concern, or injury it may be, he will always be there, ready to help. [Written by MAL Rewrite]

With his parents abroad, Kimihito Kurusu lived a quiet, unremarkable life alone until monster girls came crowding in! This alternate reality presents cutting-edge Japan, the first country to promote the integration of non-human species into society. After the incompetence of interspecies exchange coordinator Agent Smith leaves Kimihito as the homestay caretaker of a Lamia named Miia, the newly-minted "Darling" quickly attracts girls of various breeds, resulting in an ever-growing harem flush with eroticism and attraction. Unfortunately for him and the ladies, sexual interactions between species is forbidden by the Interspecies Exchange Act! The only loophole is through an experimental marriage provision. Kimihito's life becomes fraught with an abundance of creature-specific caveats and sensitive interspecies law as the passionate, affectionate, and lusty women hound his every move, seeking his romantic and sexual affections. With new species often appearing and events materializing out of thin air, where Kimihito and his harem go is anyone's guess! [Written by MAL Rewrite]

Morita Mayu, a high school girl. She is extremely reticent and her silence and habit of looking at people's eyes straightly sometimes cause misunderstanding. The reason behind it is not because she doesn’t like to talk nor because she has nothing to say. The reason she rarely speaks is due to the fact she thinks too much before speaking, thus losing the timing to speak altogether. But she lives a happy school life with her classmates.