Jitsu wa Imoto deshita.: Saikin Dekita Giri no Ototo no Kyorikan ga Yatara Chikaiwake 1 (Fujimi Fantasia Bunko) [Light Novel]

[Machine Translation] Akira, my stepbrother, was born to me as a high school student when my parents remarried. He is a beautiful boy but shy due to the complicated family environment he grew up in. I had a crush on my brother, so I always spent time playing with him for Akira's sake... I was so happy to see him, we hit it off, and the distance between us grew rapidly! ( ... Do you like me, brother? ) ( Oh, yes, of course ) The two of them are getting closer and closer with misunderstandings. And finally, I realized that Akira is my sister, and I was puzzled... ( I like the same distance with my brother as before. Akira's approach to me, aiming to make us a couple, is starting to change from "brother and sister" to "lover"! I'm too cute and easy-going, brother... This is a flirtatious love comedy with a sister who is like a brother!

親の再婚で、高校生の俺にできた義理の弟・晶。複雑な家庭環境で育ったせいで、美少年だけど人見知り。兄弟に憧れていた俺は、晶のためにいつも一緒に遊んで過ごしていたら...めちゃくちゃ懐かれて、意気投合して、距離も急接近!「...兄貴、もしかして僕のこと好き?」「ああ、もちろん」勘違いをしたまま、深まる2人の仲。そして、ついに晶が「妹」だと気付き、戸惑う俺に...「兄貴とはこれまで通りの距離感がいい。むしろ今よりもっと僕と―」「兄妹」から「恋人」を目指す、晶のアプローチが始まって!?気安くて可愛すぎる、弟...のような妹との、いちゃラブコメ!