| Relationships | Role | Relationship Start | Relationship End |
| Sumitomo Mitsui Banking Corporation | Parent | 5/16/1957 | 3/30/1988 |
| Mizuho Bank, Ltd. | Parent | 12/31/1980 | 3/30/1988 |
| Mizuho Bank, Ltd. | Parent | 3/31/1982 | 3/30/1988 |
| Relationships | Role | Relationship Start | Relationship End |
| Sumitomo Mitsui Banking Corporation | Parent | 5/16/1957 | 3/30/1988 |
| Mizuho Bank, Ltd. | Parent | 12/31/1980 | 3/30/1988 |
| Mizuho Bank, Ltd. | Parent | 3/31/1982 | 3/30/1988 |