Needs more clues about what a teen-age boy does all by himself down in the tomb filled with crud and coffins. This might make for an interesting "body parts transforming into icky tentacles" angle, but masturbation guilt isn't really a Lovecraftian level of eldritch horror.
uh oh! sounds like something ominous is coming up...
Nice form. I like the idea of "I went back to the tomb and *enjoyed* it some more"
How long is "soon"? I can't wait!
That stormy night!