YOU SAID:
I will kiss your sister so hard she'll die
INTO JAPANESE
私はあなたの妹にキスするので、彼女は死ぬだろう
BACK INTO ENGLISH
I kiss your sister, so she will die
INTO JAPANESE
私はあなたの妹にキスするので、彼女は死ぬでしょう
BACK INTO ENGLISH
I will kiss your sister, so she will die
INTO JAPANESE
私はあなたの妹にキスしますので、彼女は死ぬでしょう
BACK INTO ENGLISH
I will kiss your sister, so she will die
That didn't even make that much sense in English.