[Katsuki watches Saya take out that vampire, who dares to try to make her it's meal, and it has him even more sure that she must have been turned too. Why else would she have such a clear hatred for these things? They must've turned her when she had her guard down, and now she was suffering just as he. Grieving the humanity that was ripped away from them so cruelly. So quickly.
When asked if he hears "them", Katsuki is quiet and listens. He hadn't had a chance to sit still and focus on the sounds around him. Too distracted by the rage and pain he felt in his barely beating heart. But now that he's quiet, and is focusing hard, he can hear... other beating hearts. Beating both quick and slow, the difference between a living being and one that should be dead as a doornail.]
...heartbeats?
[He double checks that this is what Saya is referencing.]
no subject
When asked if he hears "them", Katsuki is quiet and listens. He hadn't had a chance to sit still and focus on the sounds around him. Too distracted by the rage and pain he felt in his barely beating heart. But now that he's quiet, and is focusing hard, he can hear... other beating hearts. Beating both quick and slow, the difference between a living being and one that should be dead as a doornail.]
...heartbeats?
[He double checks that this is what Saya is referencing.]