Ken Asamatsu ( 朝松健 ) - Japanese author - b. 1956



English titleJapanese titletranslatorpublishedformatpublisherISBN / eISBN / ASIN
A White Camellia in a Vase ( story in Speculative Japan 3 )Lihua Bai Chun ( 華 白椿 )Earle, Joe ( 2007 ) 2012tp/bKurodahan Press490207530X / 9784902075304
Spherical Trigonometry ( story in Cthulhu's Reign )Kyūmen sankaku ( 球面三角 )Lipsett, Edward( 2010 ) 2010p/b / e-bookDAW Books0756406161 / 9780756406165,1101186712 / 9781101186718 & B0030CVQRG
Queen of K'n-YanKon Hisashi no joō ( 崑央の女王 ) Taji, Kathleen( 1993 ) 2008 / 2013tp/b / e-bookKurodahan Press4902075237 / 9784902075236, 4902075660 / 9784902075663 & B00CKTMZVG
Genesis: Dark Birth - Shining Death ( story in Speculative Japan 4 )発端 暗生/明死Grillo, Tyran 1998 ) 2018tp/b / e-book(Kurodahan PressKurodahan Press))4902075849 / 9784902075847, 4909473025 / 9784909473028 & B07FNWSQNK
The Living Wind ( novelette in The Mighty Warriors ) Lipsett, Edward2018tp/bUlthar Press1718999135 / 9781718999138 & B07D837F7B



Downtime Pharmacy ( story in Kizuna: Fiction for Japan ) might be SF? Might be translated? I have found no details.
I haven't listed all the Cthulu mythos stories.