Kusakabe Yuki overhears some girls saying mean things about her. Gossip is not an uncommon problem among high school girls, but Yuki is particularly worried that it's happening because she's a demi. Tetsuo is sympathetic to thr concern and makes up his mind that, as her teacher, he must protect her. Hikari, a fellow demi, feels the same way.
a sharp sense of smell to pick 
up the scent of blood.
.وحاسّة شمّ قويّة لالتقاط رائحة الدّماء
und mit ihrem Geruchssinn
wittern sie das Blut.
olfato que detecte el olor a sangre…
olfato que detecte el olor a sangre…
et de sentir l’odeur du sang
à distance,
un olfatto sviluppato
per sentire l'odore del sangue...
um olfato perspicaz para 
sentir o cheiro de sangue.
и обоняние, чтобы
находить кровь по запаху.