"My father yells 'What you gonna do with your life?' " [♫ Cyndi Lauper - Girls Just Want To Have Fun]Clueless old man gets trapped in a young girl's body and gets isekai'd! And, thank God, nothing sexual happens.
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*Got a kick out of 'Middle-aged Man's Noble Daughter Reincarnation' that I just HAD to compile others like it.