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Artist's commentary
(Genshin) Sucrose observing futanari Collei masturbating with a slime ♡
Afterwards, even though Sucrose tried to put the sperm in a test tube for an experiment, she ended up pouring plenty of it into her womb.
Fanbox：https://fence14.fanbox.cc/posts/5677687
Fantia：https://fantia.jp/posts/1890382