Yushi saves a girl who wants to jump off a building. The girl begins to become obsessed with him and follows him everywhere.
and if it interests them, 
they head straight for it.
وإن أثار اهتمامه، يتّجه صوبه مباشرةً
und steigern sich
bei Interesse voll rein.
y si les interesa, se lanzan de lleno.
y si les interesa, se lanzan de lleno.
tomam gosto pela coisa 
e entram de cabeça nela
а если он ему интересен,
 шагает прямо в него.