Dark Summoner to Dekiteiru

Amona, a demi-human dark summoner who draws on demonic power, joins the party of the rigid cleric Roni. Everything about them suggests an immediate clash: her magic is exactly the sort of thing his strict principles should reject, and neither has much reason to seek the other's company. Instead, an unexpected night brings them far closer than their companions would ever imagine. From then on, the pair must continue adventuring while hiding a relationship that fits neither their public image nor the constant bickering that makes everyone assume they can barely stand one another.