Kyoudai ni Okeru Seikoushou no Kiroku

A tale of a deeply intimate relationship between an older sister and her younger brother, navigating the complexities of their bond. They are not biologically related. As they traverse a delicate period of life, they find themselves increasingly drawn into a cycle of physical intimacy, time and again. (Source: Melonbooks) Their journey is one of exploration and understanding, set against the backdrop of their unique connection. The story delves into how they cope with their feelings and desires during this sensitive phase.