Because of his extremely violent nature and his nickname "The Demon of the Sakuragi Family," the first lieutenant of the Sakuragi Family, Kirishima Toru, is feared by the rest of the yakuza world. One day, Kirishima is summoned by the head of the Sakuragi Family and is tasked with taking care of his only daughter, Sakuragi Yaeka. But Yaeka is very shy and doesn't really open up to him, which perplexes Kirishima. He then finds a notice about an open house that Yaeka's class is having, and it happens to be that day. Then Kirishima...
If you're not taking this 
seriously, I'm gonna go!
!إن لم تتّخذ هذا الأمر بجدّية، سوف أذهب
Wenn du eh nur Scheiß machst,
geh ich wieder!
¡Si no te lo tomas en serio, me voy!
¡Si no te lo tomas en serio, me piro!
Si vous vous moquez de moi,
je m’en vais !
Se non vuole fare pratica seriamente, 
allora me ne vado!
Se vai fazer isso a sério,
eu vou embora!
Раз играетесь, я по своим делам пойду.