Jitsu wa Imouto deshita.: Saikin Dekita Giri no Otouto no Kyorikan ga Yatara Chikai Wake

When our parents remarried, I gained a new step-sibling: Akira, a beautiful but shy high school student who grew up in a difficult family environment. Having always wanted a sibling, I was thrilled to welcome Akira into my life. We quickly bonded over our shared circumstances, spending time together and growing closer each day. As we navigated our new family dynamic, our relationship evolved in unexpected ways. What started as a simple sibling connection began to shift into something more complex, leaving both of us questioning the nature of our feelings and what it truly means to be family. This is a heartwarming story about two step-siblings learning to understand each other while discovering that love and relationships can take many different forms. A sweet romantic comedy that explores the boundaries between family bonds and romantic feelings. (Source: Kadokawa, translated)