Dont know if you still want it but someone upload it recently .
https://www.anime-sharing.com/threads/own-bought-140927-light-soushuu-senshinkan-gakuen-hachimyoujin-ten-no-toki-相州戦神館學園-八命陣-天之刻.1707160/
Hi , is the Is the Expansion Patch included in Perennial Dusk -Kinsenka?
https://www.anime-sharing.com/threads/%E2%98%84%EF%B8%8Frelease%E2%98%84%EF%B8%8F-250529-3470530-frontwing-usa-bushiroad-inc-perennial-dusk-kinsenka-jpn-chn-eng.1699630/
Original title: 相州戦神館學園 八命陣 天之刻
Company: light
Release date: 2014/09/26
Language: Japanese
Official website: http://www.light.gr.jp/light/products/ssg_cs/
VNDB:https://vndb.org/r34879
This one is a port from PSV to PC for all-ages(E15)