Switch's "origin story" continues as Sawa-chan goes to young Switch and his older brother for help from a stalker. In a moment of spite stemming from jealousy, though, Kazuyoshi sends Switch and Sawa off on their own to buy personal protection items. While they're gone, Sawa's friend Yukino warns Kazuyoshi that the stalker is also a slasher. Kazuyoshi means to go out after his little brother and the girl he loves, but fate intervenes...
something like a personal alarm 
that would make a loud noise.
algo como una alarma personal 
que hiciera mucho ruido.
algo como una alarma personal 
que hiciera mucho ruido.
que faça muito barulho, 
como um alarme pessoal.