Seiun Sky and Nishino Flowers owner Shigeyuki Nishiama has announced his leukemia in remission.
Shigeyuki Nishiyama, the owner of the crown names: Seiun & Nishino. Best known here for being the owner of the horses that inspired the in-game umamusume: Seiun Sky & Nishino Flower, announced 5-6 months ago he had been diagnosed with Acute Myeloid Leukemia.
Today, as of his most recent blog post and twitter post, he has announced he is in remission and been discharged from hospital.
Overall fantastic news. Though the road to recovery is still present, that he lives to fight another day is uplifting. Please continue to show your love for him.
You can read his Twitter Post here: https://x.com/seiun0005/status/2090612592519893183
You can read his blog post here: https://ameblo.jp/nybokujo/entry-12976342957.html
From his twitter, translated via twitter (may be errors in translation):
"8/21 (Fri) After about six months of hospitalization and treatment, I have returned to society. It will take another 2-3 months to get back to normal, but for now, I'm alive."
From His blog, translated via my browser (may be errors in translation):
"3/13 (Fri) Acute myeloid leukemia discovered
3/16 (Mon) I was admitted to a hospital in Tokyo and immediately started anticancer drug treatment.
After about six months of inpatient treatment...
Today 8/21 (Fri) 9:00,
I was able to get out of the hospital in remission."
Posted Aug 21, 2026, 2:34 AM UTC