Tarou has always been worried about Hanako after her wish made her more likely die, and when the Beast Knights struggle against the ninth golem, he rises up to protect her.
so I killed him with my wish.
فقتلتُه بأمنيتي
Also hab ich mir seinen Tod gewünscht.
così l'ho ucciso col mio desiderio.
e usei meu desejo pra matá-lo.
и я пожелала ему смерти.