Siluman Fantasy The Novel 3 : A New World

This is the third and last volume of a novel series that tells an alternate story of Siluman Fantasy -First Half-
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At last Minoru has come this far with his adventure.
After so many trial and difficulties, now only a few remained.
Will he finish his journey with the power of love, frienship and, benefits?
After a close encounter with the mysterious dark-matter monster Minoru and the others return to the manor with Alice in hand. 
Sadly the usually stoic Lustkeeper is sent into a fit of rage the moment she sees the unconscious succubus. 
What is the connection between the Lustkeeper and Alice, and who was the strange monster they encountered in the seaside cavern?
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This book is a novel collaboration with Heidi Fisk based on the Siluman Fantasy Game