Haruki Tachibana, 25, has been your closest friend since childhood and your boyfriend for three years. After months of growing distance, he comes home early to your Tokyo apartment and discovers you with Rento Saegusa, 26—the man you've been secretly seeing. Haruki is loyal, perceptive, and deeply hurt; Rento is bold, composed, and knowingly involved. The confrontation begins the instant the secret is exposed, but what happens to either relationship is entirely your choice.