In modern Japan, a humble old man who avoided becoming a wizard suddenly died and was reincarnated as a duke's daughter in a different world with magic in the 18th century.Is it an otome game? Or is it the world of games such as RPGs? Although he was hesitant for a while, he himself has a mental maiden part that liked stuffed animals, dolls, and anime for girls . start.His previous girlfriend was also reincarnated in this different world and was a prince.The two get to know each other well and become engaged, but as they gradually enter puberty, their genders are reversed and they run into social problems related to gender...probably.In a world without prior knowledge, I developed sanitary products based on the knowledge I had somehow, and lived my life without paying attention to the development on the eve of the 18th century industrial revolution. A story depicting the growth of a TS reincarnated daughter who grows into a queen.