Ayato is frickin’ terrified. He may have woken Hinami up at 3 am screaming because he found a mouse skittering across his arm. He was too scared to even use his kagune.
Hina, naturally, found it cute and adopted it.
Ayato’s pulse was slowly returning to normal when Yomo, Touka, and Kaneki burst in, thinking he was being murdered.
Everyone then panicked because they were not expecting Hinami there. And Ayato’s pulse went straight back up. And he fainted the results are unknown.
Mercy and Magic 