People in Another World: My Home Is a Suite

In another world, everyone wants to become immortal. But as the male protagonist, he focuses on leisure. Catching monsters is not for the reward of money, but purely to haunt people's "bodies". Plant some kinds of spiritual fruits and herbs. Keep some rare birds and animals. Guns and ammunition, build points. How come there are so many warblers and swallows in what was originally just my family's cabin? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.