I don't have any immunity to girls, so I get an erection at the slightest thing. - My childhood friend, sister-in-law, mother-in-law, and private tutor who couldn't bear to see me tried various methods to help me overcome my troubles. - And in the end, he says something quite absurd, saying, ``Even if you touch my penis, try your best not to get an erection!'' - Of course I would get an erection, so I said, ``If you really want me to develop immunity, please let me fuck you!'' - Then...