Family Meeting to Counter the Villainess

I was reborn as the son of a duke who seems like a villain. I remembered my past life because I developed a fever from an epidemic disease. Even though the duke's household should be a cold family relationship where they have no interest in each other, I was immediately summoned by my father, the duke. My mother, whom I rarely have the opportunity to see, was also called to that place... ——— This is a story where the protagonist's younger sister becomes a villainess, and the family holds a meeting to discuss countermeasures to avoid the duke's household being dissolved. This time, romantic elements are minimal. (compared to our usual works) I wrote this on a whim due to momentary weakness. (compared to our usual works) Some of you may have noticed I'm always coming up with stories with thin romantic elements on impulse! I accept such criticism gracefully. ——— The comments section is like a Showa-era girls' manga reunion venue. Readers more knowledgeable than this amateur author are generously explaining the in-story references in gorgeous detail. I'm so grateful. If you catch on while reading, head to the comments section! (lol) [Also posted on Kakuyomu]