Interspecies Sex FANTASY ~Tentacle Trap Part~

Transported to another world, the fifth installment, "Tentacle Trap Part"

Continuing from the first installment where the protagonist is suddenly transported to another world and taken by a slime, the second installment where he receives electric shock treatment from an elf, the third installment where flees from the elf and is taken by goblins, and the fourth installment where he encounters a kobold and tastes unnecessary fear...

This is the fifth installment of Interspecies Sex where the pitiful protagonist sinks underground and gets felt up deep in his stomach.
The elf and the kobold appear briefly, and the story steadily progresses. However, as you can't understand the language, it may feel like it's not progressing.

Official Translations:
English, S.Chinese, T.Chinese, Korean