Itadaki! Seieki Extra
A human schoolboy dating a succubus Setogaya Mari. She is a horny part-vampire who takes her nourishment not from blood but from drinking semen. As she performs oral sex for energy, various things can happen; for example, her breasts might simply grow during the act. Every time there is a chance, the cute succubus is begging for more sex and performing lewd act even when there is no one in the classroom.
Original title I`ll Have Your Semen
Studio Pashmin
First air date Mar. 27, 2014
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Episodes
Itadaki! Seieki Extra - Episode 1 E1 / Aug. 28, 2025
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