Insured persons lose their health insurance status when they retire. In other words, insurance benefits are terminated at the point of retirement. However, those who were insured continuously for 12 months or longer prior to retirement are entitled to the Injury and Sickness Allowance, and, in some cases, the insurance benefits for childbirth and deaths described below for fixed periods following retirement. This practice is referred to as the "continuing benefits after disqualification."
Insurance benefits provided after retirement exclude additional benefits.

Benefits after you retire (For insured persons only. There are no benefits for dependents)

-Injury and Sickness Allowance

If you were receiving Injury and Sickness Allowance or satisfied requirements for receiving it at the time you left employment and remain unable to work due to treatment of the same sickness or injury, payment of the allowance will continue for a total of 18 months counting from the date payment of the Injury and Sickness Allowance began. (Payment of the Injury and Sickness Allowance will end if you become able to work after you leave your employer. In that case, aggregation of the payment period will not resume regardless of whether or not you have recovered and even if you again become unable to work due to the same injury or illness.)
The Injury and Sickness Allowance is not available to persons entitled to the Old-Age Employees' Pension who receive continuing benefits after disqualification. However, in the event earnings from this pension total less than the Injury and Sickness Allowance, such individuals are entitled to receive the balance.

See here for required procedures>> "When sickness or injury keeps you from work"

-Maternity Allowance
-Childbirth and Childcare Lump-sum Grant

Insured persons can receive the Maternity Allowance in the event they were recipients thereof at the point of retirement or in the event they give birth to a child within six months of retirement. Insured persons can also receive the Childbirth and Childcare Lump-sum Grant in the event they give birth within six months of retirement.

See here for required procedures.
-Maternity Allowance >> "Maternity Allowance is provided to cover a part of your living expenses during maternity leave"
-Childbirth and Childcare Lump-sum Grant >> "Our Health Insurance Society offers loans to cover childbirth expenses"

-Funeral expenses (Burial Costs)

Funeral Expenses are provided in the event insured persons die (1) within three months of retirement (a stipulated prior period of insurance coverage is not required); (2) while receiving the Injury and Sickness Allowance, or Maternity Allowance; or (3) within three months of termination of these benefits.

See here for required procedures.>> "Funeral expenses are provided"