When Daisey runs afoul of the leader of a group of delinquents who threatens to trash Kaimei High unless she becomes his woman, Tsubaki takes it upon himself to avenge her honor and set things to rights!
Listen, I only consider people who 
are useful to me as "friends".
¡Escucha!
Escucha, yo sólo considero a quienes
son útiles para mí como amigos...
Escute bem, só considero 
"amigo" quem é útil para mim.