子ども扱いしないでください! ～幼女化しちゃった完璧淑女は、騎士団長に甘やかされる～

Don’t Treat Me as a Child!, Kodomo Atsukai Shinaidekudasai! Yojo Ka Shichatta Kampeki Shukujo Ha, Kishi Dancho Ni Amayakasareru, Don't Treat Me Like a Child! The Perfect Lady Who Turned Into a Little Girl Is Spoiled by the Knight Captain, Kodomo Atsukai Shinaide Kudasai! Youjoka Shichatta Kanpeki Shukujo Wa, Kishi Danchou Ni Amayakasareru

The Perfect Lady with a Secret: Rosé’s Double Life Rosé, known as the "Perfect Lady," faces three significant problems: her older sister constantly pushing responsibilities onto her, her childhood friend who lives to steal from others, and her fiancé who has fallen for that very friend. As these troubles pile up, Rosé's stress reaches a breaking point—and mysteriously, her body transforms into that of a child! However, there’s one moment of peace in Rosé’s hectic life: the time she spends with Ewan, the "Smiling Knight," who unknowingly soothes her troubled heart. In her childlike form, she hides her true identity and enjoys their calming conversations. But it seems that Ewan has an interest in the adult version of Rosé... A charming tale of a noblewoman’s secret transformation and an unexpected romance!