Christian Church — The games story has the Christian Church taking an active role in it. Or a similar imaginary organization/subdivision of the Christian Church is used as a part of the story.
Christian Mythology — Christian mythology strongly influences the setting and events in this VN.
Circus — This visual novel has many scenes set in a circus. A circus is a company of performers who put on diverse entertainment shows that may include clowns, acrobats, trained animals, trapeze acts, musicians, dancers, hoopers, tightrope walkers, jugglers, magicians, ventriloquists, and unicyclists as well as other object manipulation and stunt-oriented artists.
Civil War — A civil war plays an important role in the story. Civil war is a large-scale internal conflict between factions, regions, or groups within the same country or organization. These conflicts often stem from political, ideological, ethnic, or territorial disputes.
Clamps (BDSM) — This visual novel features scenes with clamps or similar devices (e.g. clothpins used for the purpose).
class president — Character works as or is a class president.
Classic Tsundere Heroine — One or more of the heroine is a classic Tsundere (as they were defined before the anime "mainstream" assimilated it). Starts tsuntsun (cranky, violent and possibly violent) towards the protagonist (and possibly everyone else), due to some reason or another, and over the course of the game falls in love with him/turns deredere (lovestruck) . While tsuntsun and deredere might conflict, this phase.