| year | month | |
|---|---|---|
| 1970 | October | Establishment of the Katsuhira Central Hospital at 187-3 Wariyama, Araya Machi. |
| 1975 | December | Establishment of the Medical Corporation Junkei-kai. |
| 1988 | October | Relocation of Katsuhira Hospital to Sotoasahikawa now known as Sotoasahikawa Hospital with 241 beds. |
| January | Katsuhira Central Hospital is converted to a care facility for the elderly called Katsuhira-en with 83 beds. | |
| 1998 | December | Expansion of Sotoasahikawa Hospital with a Hospice Ward - 13 beds. |
| 2000 | April | Establishment of Forever Co., Ltd, a related company providing home care services for the elderly. |
| 2001 | November | Establishment of Group Home Sala 9 beds. |
| 2003 | August | Forever Co., Ltd established a nursing care home for the elderly called Sophie. |
| October | Medical Corporation Junkei-kai established the Group Home En (9 beds). | |
| 2004 | November | Forever Co., Ltd established Day Care Service Center Minami. |
| 2006 | March | Forever Co., Ltd established the Forever Museum of Contemporary Art Gallery (FMOCA). |
| August | Forever Co., Ltd opened a Superior Nursing Home for the elderly called Honoka (50 rooms). | |
| 2007 | April | Establishment of the Araya General Suport Center called Endeavor. |
| June | Establishment of the 2nd Hospice ward in Sotoasahikawa Hospital. | |
| September | Creation of the Non-profit organization Friends of IFA Japan (FOIFA). | |
| 2008 | August | Establishment of Sotoasahikawa Satellite Clinic (SOSAC). |
| October | Establishment of Fortune Day Care Services. | |
| 2010 | April | Honoka changed from serving as a lease apartment building to a care and nursing home. |
| April | Katsuhira-en is permanentry closed. | |
| May | Establishment of Green, care and nursing home. | |
| 2011 | March | Fortune Day Care Services are permanentry closed. |