The First Intrusion Incident

A bizarre case involves a mysterious power from another world? ! Who are they? Is this a Cthulhu-style novel? I don't quite agree with it either. I just wanted to depict the image of a person with low self-esteem who gradually becomes alienated under the stimulation of the outside world. Note that the author's postscript is also part of the work, please do not include it too much. This is the first time a newcomer has written. The plot is bland and the writing is rough. Please feel free to criticize! If you like it, thank you very much! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.