The Marine then uses the girl's younger sister as a human shield.

It would work, wouldn't it, if I used my sister to play on your compassion?

She had sprung yet another trap, using my sister to put me off-guard.

He used his own sister as the host mother.

"By using our sister to gain possession of the White Tiger?"

Yasunari used to date Akihito's sister, who died in an accident.

He intended to use Reed's sister as an important part of his plan for immortality.

The best I could do using my little sister as a tripod.

When were you wont to use my sister thus?

Why not use him the way Scarvan uses our sister?