Koruri 20150701 has been released. I'll attach an ebuild it. Reproducible: Always
Created attachment 406162 [details] koruri-20150701.ebuild
Version 20151021 (SRC_URI: mirror://sourceforge.jp/${PN}/63935/${MY_P}.tar.xz) has been released until now.
I made a PR addressing this bug: https://github.com/gentoo/gentoo/pull/5146 (but for version 20161105, not 20150701)
https://github.com/gentoo/gentoo/pull/5146 was merged but I had forgot to close this bug. Thank you for accepting the patch!