Love Apartment: I Want to Become an Immortal

I didn't know why I came to a world similar to Earth, but found that it was a strange yet familiar world. What I am familiar with is that this world seems to be a combination of TV series I have watched before, such as Love Apartment, Family with Children, etc. Strange because the world is not as simple as it seems. When the system is activated, the understanding of the world begins to gradually deepen. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.