Hasn't Japans central bank started last week to buy 100% of all newly issued government bonds? I fear this will end very badly for them since the Yen doesn't ha

Hasn't Japans central bank started last week to buy 100% of all newly issued government bonds? I fear this will end very badly for them since the Yen doesn't have the status as a global reserve currency like the US Dollar. Also, the debt to GDP ratio is insane, I am still stunned they didn't default 10 years ago. Maybe a default is the only way for them to get out of the decades of stagnation at this point, even though it will be very painful in the beginning.