I don’t need any deep relationships. I have no desire for a girlfriend, and I only require one friend who holds any value to me. Ever since I threw out my youth for the sake of efficiency, there is one person who keeps entering the bedroom of Ooboshi Akiteru. She’s neither my little sister nor my friend. She’s nothing more than a bothersome, annoying Kouhai, as well as my friend’s little sister: Kohinata Iroha. “Senpai, let’s go on a date~! Did you think I’d say that~?” Rather than blood, it seems like energy drinks run through her veins. She keeps occupying my bed, and she tries her best to seduce me with whatever method she can play to her favor. She’s a girl who’s constantly annoying and obnoxious around me. Even though I’m busy all day long, she doesn’t care. And in case you’re wondering why all these envious gazes are directed at me, it’s because Iroha is actually really popular. She’s an honor student at our school with top grades to boot, and she’s known for being kind and proper to anyone she meets. …Hey now, why are you only so annoying when you’re around me?
- Volume 1, Prologue
- Volume 1, 1: My friend’s little sister is only annoying towards me
- Volume 1, 2: Only my friend’s little sister’s older brother is kind to me
- Volume 1, 3: The company president’s accompaniment is only cold towards me
- Volume 1, 4: Only the boy’s admired teacher is sexy towards me
- Volume 1, 5: My friend’s little sister is only breasts towards me
- Volume 1, 6: I’m only annoying towards Oji-san’s daughter
- Volume 1, 7: Only Iroha, Ozu, Sumire, and I are annoying towards Mashiro
- Volume 1, Intermission: Mashiro’s feelings
- Volume 1, 8: Only my friends and I are annoying towards Mashiro
- Volume 1, Intermission: Iroha’s feelings
- Volume 1, 9: My friend’s little sister is annoying towards her friend’s enemy
- Volume 1, Epilogue
- Volume 1, Extra
- Volume 1, Afterword
- Volume 2, 0: Summary
- Volume 2, Prologue
- Volume 2, 1: The Girl Who Confessed is Only Cold in Reality
- Volume 2, Intermission: Iroha and Mashiro
- Volume 2, 2: The People Around Me Are Only Weird Towards Me
- Volume 2, 3: My Friend’s Little Sister is Only Kind in Reality
- Volume 2, 4: Only the Club Advisor is Strict with the Sports Club
- Volume 2, 5: My Teacher’s Little Sister is Only Bad at Acting
- Volume 2, Intermission: Iroha and Mashiro 2
- Volume 2, 6: My Friend’s Little Sister is Calm and Collected Towards Everyone
- Volume 2, 7: My Fake Girlfriend is Resolute Towards Her Confession’s Reply
- Volume 2, 8: Only I Apologize Towards My Friend’s Little Sister
- Volume 2, 9: We’re Good at the Theatre Club’s Special Training
- Volume 2, 10: My Friend’s Little Sister is Clearly Annoying
- Volume 2, 11: Only My Friend’s Little Sister’s and My World
- Volume 2, Epilogue
- Volume 2, Afterword
- Volume 3, 0: Summary
- Volume 3, Prologue
- Volume 3, 1: Only My Friend’s Little Sister Is Scary Towards Me
- Volume 3, 2: My Homeroom Teacher Is Only Bubbly Towards Me
- Volume 3, 3: My Homeroom Teacher is Only Breasts Towards Me
- Volume 3, 4: My Teacher’s Little Sister Only Has Killing Intent Towards Me
- Volume 3, 5: The Strand of Youth is Only a Traffic Roundabout for Us
- Volume 3, 6: My Teacher’s Grandfather is Only ??? Towards Me
- Volume 3, 7: The Ghost of the Inn is Fatally Curseful
- Volume 3, Intermission: Mashiro and Kanaria
- Volume 3, 8: Only the Teacher is White on the Morning at the Inn
- Volume 3, 9: The Traditional Ritual Is Only Annoying for the Male and Female Couple
- Volume 3, Epilogue: Sumire and Mashiro
- Volume 3, Afterword
- Volume 4, Prologue
- Volume 4, 0: Summary
- Volume 4, 1: My friend’s little sister is only clever towards me
- Volume 4, 2: My friend’s little sister is only toilet towards me
- Volume 4, 3: Only towards the little sister, memories of the friend are a topic
- Volume 4, 4: My homeroom teacher is only annoying towards me
- Volume 4, 5: Mashiro’s editor is annoying towards us
- Volume 4, 6: At the beach of youth, only I am annoying
- Volume 4, 7: Mashiro’s Editor is only annoying towards me
- Volume 4, 8: Only my friend’s little sister and I are skipping
- Volume 4, 9: My friend’s little sister is only Bikini towards me
- Volume 4, 10: My friend’s little sister is annoying towards the [5th Floor Alliance]
- Volume 4, Epilogue
- Volume 4, Afterword
- Volume 5, 0: Summary
- Volume 5, Prologue
- Volume 5, 1: Oh right, My Cousin is My Fake Girlfriend
- Volume 5, 2: Only I Receive a Gift from the Business Partner
- Volume 5, 3: Only I am a Stalker towards my Friend’s Little Sister
- Volume 5, 3: The Fake Girlfriend is Thick Towards Me
- Volume 5, Intermission: Iroha’s Gloomy Feelings
- Volume 5, Intermission: Nama and Shikibu
- Volume 5 5: Our Otoi-san is Only Profound Towards me
- Volume 5 6: The Fake Girlfriend is Only Yukata Towards Me
- Volume 5, 7: My Friend’s Little Sister’s Rival is Annoying
- Volume 5 8: The Fireworks with the [Friend’s Little Sister]
- Volume 5, Epilogue
- Volume 5, Afterword