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Giantess Alphys X Undyne: Bigger, Longer and Uncut

Out of jealousy for Alphys always beating her in the Alphys VS Undyne contests, Undyne decides to get her revenge by shrinking herself and sneaking inside Alphys' brain to publicly humiliate her fo...

Category: Undertale - Rating: R - Genres: Humor,Parody,Romance - Warnings: [!!!] [V] [X] [R] - Published: 2016-08-16 - 4266 words - Complete