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You are a huge spider waiting for a pray in the dungeon to lay eggs on. Use your poison to change the intruder to a convenient seedbed.

little step-sister Sophia is caring about her pudgy belly. You are her older step-sibling who is a chubby chaser. One day you found a chemical that can make people fat so you chose to use it to Sophia.

A strong-willed girl sneaked into your lab. You, a scientist, captured her to use her as a test subject to test your newly developed chemical.