Koushaku Reijou ni Tensei shiteshimatta node, Mental Otome na Ore wa, Zenryoku de Onnanoko wo Tanoshimimasu

A humble man in his twenties suddenly dies and is reborn as the daughter of a duke in an 18th-century lookalike world where magic exists! He is now living a second life as the adorable "Miranda Mirandiehl," who looks like a doll. As he was always a "girl inside" with girlish interests, he accepted his reincarnation surprisingly easily. And so, after being reborn as Miranda, he will enjoy his new life to the fullest! What kind of encounters await him, and what lies ahead in his gender-swapped otherworldly reincarnation life?

(Source: Takeshobo, translated)