2x7 - Ef: A Tale Of Memories & Melodies

In the past, Yuko reveals to Yu a knife she always carries given to her by her older brother if she wanted to kill him. Yu takes the knife and confronts Yuko's brother, but Yu does not go through with it, and gets beat up. In the present, Mizuki seeks advice from Kei and Yu on how to approach Kuze, but when she goes to his house, he acts very negatively towards her, and berates her with many questions. After she leaves, Kuze experiences intense chest pains, and after struggling with his pills, and managing to break the bottle open, he takes some of the pills and recovers from the attack while saying he still wants to live.