Manga - dark history of reincarnated villains vol 5

To speed Yomi's recovery in the aftermath of Kagura's ambush as a Knight of Schwartz, Iana and her companions bring him to Ginoford's family manor to seek the assistance of Ginoford's best friend, a doctor named Yatori. But something about the man seems...off to Iana. Is he really just the charming gentleman he appears to be-or does a more sinister nature lurk behind a congenial facade?!