RKI-625 [Uncensored Leaked] Every time her older sister says "I love you," I ejaculate uncontrollably. I'm like a Pavlovian dog with premature ejaculation. - Tsukino Luna

[Through conditioning, living organisms can develop conditioned reflexes. See "Pavlov's dog experiment."] I love her, but I can't ejaculate during sex. Every time she says "I love you," my penis strangely throbs. With each repeated "I love you," I find myself ejaculating... This strange condition is discovered by her older sister, leading to days of experimental training involving "love" and "ejaculation." Am I just like that dog, constantly ejaculating reflexively at the mere mention of "love"...?