The Summer a Boy Grew Up · Unmasking Kirill Episode 4 / 4
Ryuuki discovers the shocking truth that his sister, Reiko, is the secret identity behind the persona "Kirill." After Reiko confesses her struggle between her responsible sisterly role and her repressed desires, Ryuuki accepts her completely, leading the pair to embrace their taboo relationship through daring public encounters. As the summer draws to a close and Reiko returns to Tokyo, Ryuuki reflects on his transition into adulthood and the secret bond they now share.
