We all know, Frieren does it on purpose for this exact reason, the fedling of being absorbed and abused by the tentacles is like nothing else, she just wants to feel it more (shino)
You know you shouldn't be enjoying being violated like this. But with each load the tentacles unleash you feel your body becoming more and more willing. Unable to break free, you find yourself begging for more, begging for every hole to be filled...