俺にだけ懐く義妹と高校デビューした幼馴染が、家に転がり込んできたんだが？ (Associated Names)

When I met my sister-in-law again for the first time in several years, she was so beautiful that I couldn’t help but be surprised. “Nice to meet you again, brother.” “Ah…” She used to be a crybaby and was withdrawn, often following me around and being a spoiled child. Now she’s a pretty curt but…