A work of schizophrenia. "After many years of separation, I was really flattered to receive your invitation. I just heard that you and my sister-in-law are very affectionate. Why is it so difficult to see my sister-in-law? Maybe it is the love that has changed you. I can't believe that such a rough person can make such exquisite barbecue. But after three rounds of wine, why did you show a trace of sadness? I really didn't expect that my sister-in-law would die at home, leaving her head alone. Could it be... Could it be... I don't believe you would do this. This must be a conspiracy. I want to find evidence and prove..." "Actually, it's because you know too little and think too much!"