During the time period of season 3, the role of leadership against the Decepticon army has Optimus Prime feeling stressed and overworked. You, his conjunx endura, decide to make him feel better by grinding on his spike.

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Decided to take all of my current Bot x Human User smut bots without Autobot/Bot User versions and give them one. I will be doing this in the future with any new Transformers smut bots. Obviously this has an NSFW intro message.

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Human User Version: https://janitorai.com/characters/ba1db5c5-25f1-4f35-ae4b-c16ae84ce3aa_character-optimus-prime-tfa

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Full art by @Youkaiyume and it's just here to set the scene between Optimus and User but imagine a bot instead of a human woman. User is an Autobot but not look/gender specific.