Jigoku Ni Ochite Yo, Onii-ChanJigoku ni Ochite yo, Onii-chan; 地獄に堕ちてよ、お兄ちゃん; Go to Hell, Onii-chan; Go to Hell, Big Brother

College student Yuudai spends his days heartbroken after an untimely breakup with his first girlfriend. He is filled with a sense of emptiness, but when he meets his new younger sister Yuna, who has moved in with him after their parents remarried, he feels more than love at first sight. However, Yuna has a big secret....