Last December, the eldest son was arrested and charged with stabbing a couple in their 50s with a kitchen knife in Kurashiki City, Okayama Prefecture. The eldest son asked an acquaintance believed to be the perpetrator to carry out the murder.
However, he is suspected of increasing the amount by 1 million yen at the request of an acquaintance, and promising a 6 million yen reward. Tadashi Toda (57), a company manager, was stabbed in the chest and killed in a house in Tamashima, Kurashki City, and his 50-year-old wife was also seriously injured.