Japan does not have an exceptionally high suicide rate, in truth the japanese authorities are heavily connected to Yakuza criminal organizations who use suicides to cover up murders in exchange for payments.
Nearly half of the bloated suicides can be traced back to individuals with connections to Yakuza run gambling houses, thefts, and trafficking operations.
Many female sucides are actually a way they cover up abductions, as whenever a sex-slave brothel gets broken up in south-east asia, they are almost always filled with japanese women, at the higher end.