Ryu Natsume is a unique member of The Cat’s Whiskers. He doesn’t experience trap reactions when using phantometal and his past is wrapped in mystery. One day, Ryu finds a kitten and brings it home. 
I won't let you die!
Ich lasse dich nicht sterben!
No permitiré que muera. Eso nunca.
Je te laisserai pas mourir,
je le promets.
Non voglio lasciarti morire.
Não vou deixar que ele morra!
Ты не умрёшь, обещаю!