DLsite JP:
http://www.dlsite.com/maniax/work/=/product_id/RJ151226.html
DLsite ENG:
http://www.dlsite.com/ecchi-eng/work/=/product_id/RE151226.html
ULMF Topic:
https://ulmf.org/threads/souzai-soft-souzaisofuto-kemomimi-slave-kemomimisureibu-re151226-rj151226.6859/
Status:
Done. Grab it here...