Mistaken for the Villain's Lover

In the city of Heilbronner, a charismatic gentleman thief operates in the shadows, utilizing the alias Ludger Kassen, a philanthropic son of a duke, to conceal his nocturnal activities. By day, Ludger indulges in his passion for history, uninterested in the trappings of politics or power. However, his dual identity remains a closely guarded secret. Meanwhile, isekai'd knight Clara finds herself entangled in the case of the Heilbronner thief, leading her to assume command of the ragtag Ruby Knights. As Clara navigates this complex situation, she develops a working relationship with Ludger himself, which ultimately reveals to her that his actions are motivated by a far more intricate purpose than initially perceived.