Tomodachi no Imouto ga Ore ni Dake Uzai

I don’t want complicated connections in my life. A girlfriend is unnecessary, and I only care about having one meaningful friend. After sacrificing my youth for efficiency, there’s one person who keeps barging into Ooboshi Akiteru’s room. She isn’t family or even a close companion—just an irritating underclassman who happens to be my friend’s younger sister: Kohinata Iroha. Her constant interruptions are nothing but a nuisance, disrupting the peace I’ve carefully built. Despite my indifference, she insists on invading my space, acting like she belongs there. I have no interest in her antics, yet she persists, turning my solitude into chaos. Her presence is unwelcome, a distraction I never asked for. She’s loud, clingy, and utterly exhausting, the exact opposite of what I want around me. Yet, for some reason, she refuses to leave me alone. Every encounter is a test of patience, a reminder of how little control I have over my own life. Efficiency means nothing when she’s around, dragging me into her pointless dramas. If only she’d realize how little I care. But of course, that would be too easy.