I really liked the beginning, but then when the second girl showed up, I just had to stop like, bro wtf. He just let her live inside the house that he and his wife built, and he did't even react when she tried to feed him aphrodisiac. And he just met her like a few hours ago. This might not be a problem for everyone, but it is for me since I really hate poorly done harem, and this is a prime example.

At the beginning it was a great novel but then he sort of forgot he was immortal and it all went downhill from there.

See this! I just gifted the story: Inspiration capsule