Boku wa imoto ni koi wo suru
Yori and Iku, twins who were once close, are now separated by Yori's forbidden feelings for his younger brother. He tries to escape by sleeping with Iku's best friend and even enrolling in a foreign school. However, when Iku started dating, Yori could no longer contain her turmoil. He confessed—not as a brother, but as a man who loved her. Iku, not wanting to lose their bond, is willing to do anything. But can this forbidden love survive amidst social taboos?