Mama Haha no Kokoro-e

age gap based on a light novel books business management businessman / businesswoman child neglect childcare count/countess cute child/ren doting family members doting parents dukes emperors empress/es european ambience female protagonist game designer game developer game industry isekai kingdom building loving family magic marriage of convenience mother protagonist nobility/aristocracy noble female lead noble male lead past life/ves plays a big role reincarnated as the villain/ess reincarnated in a book world reincarnated in another world scenario deviation stepmother-stepson relationship technology technology gap transmigrated as the villain/ess transmigrated into a book world transmigration writers