After unexpectedly finding herself in a different world two years prior, Rin Tachibana, a woman uninterested in love, leads a peaceful life as a clerk for a group of swordsmen. Her tranquility shatters when the king and the head of the border guard task her with serving a man, Oscar Garland, a gallant knight revered by all. Despite his charm, Rin views him as nothing but an extremely rude individual she despises. Yet, when she learns that his life is at stake without her aid, she reluctantly agrees. Initially meant for healing, Rin's interactions with Oscar ignite emotions she thought were long dormant, leading to unexpected and passionate confrontations.