MKON-096 When I let a cuckold take over my beloved girlfriend, she awakened her masochistic attribut

I want someone to cuckold my beloved girlfriend 'Uta Hibino'! Having become addicted to sex, I signed up for a service called ``Nitoriya'', which lets you cuckold your lover. She has a sadistic personality, which is the complete opposite of me, so it might not work out... That's what she thought, but having sex with a stranger awakened her masochistic nature. Moreover, she squirted squirts that she had never squirted during sex with me. So frustrating...! Even so, I get excited and I'm a hopeless masochist.