Sandworm/Extra

Kenkou's Notes
EN= This time, it's the sand insect that lurks within the sand, "Sandworm." With this, we'll say farewell to the desert for a while. The female part looks like a fake serving as bait, but that's her real body. She leaps out of the ground and gulps down men, but in a sexual way so please rest assured. The shell protects the real body, and inside serves as a living space for her and her husband. When you include that living space--the sandworm's body--she's a monster girl with a fairly large body. There exists a living being that's suited for the two of them to use, and an enormous living being with a mouth that you could say is the size of a room.*

... 
 * -|JP=
 * TL Note:This last sentence is translated a bit stiffly because I couldn't follow the nuance implied by linking the two phrases with から. It's not wrong as far as the info about the sandworm's concerned.

Trivia

 * Sandworm featured in the Watashi no Koibito o Shoukai Shimasu! EX doujin drawn by SlapStickStrike.
 * The interior of a sandworm can emit a magical light for visibility (source: Kenkou tweet).

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