Game: https://www.dlsite.com/maniax/work/=/product_id/RJ284978.html
Links: http://kwt.web2.jp/ | https://ci-en.dlsite.com/creator/51 | https://twitter.com/ChaosGateKWT | https://www.kaosu.jp/succubusheaven/
Description:
3rd person hack n slash with some visible influence of the Souls series...