Reincarnated as a marquis in a world of crowns, swords, and magic, Aika is a calm, nonchalant kudere who only wants a quiet life. Too bad the Crown Prince, the Grand Duke, and even the Silent Duke fall in love with her at first sight. To make things worse, her playful childhood friend-the sunshine-like Tower Master-keeps stealing her away and mocking the others. From glittering ballrooms to looming wars, four powerful men fight for her hand... but Aika only sighs and mutters the same word every time: "...Troublesome."