SSIS-527 Yura Kano gets a hard erection on her beloved girlfriend who is addicted to an aphrodisiac by DQN and becomes addicted to sex

Is DQN better than me? - Shit! - I encountered a DQN group of former classmates who used to bully me when I was a student...Yura (my girlfriend) was tied up in front of me as I was taken to my alma mater, which was closed down, and detained. - I get an erection when I see Yura, who I don't know, accepting someone else's dick and feeling it so hard...I can't forget my excitement and try to have sex for the first time, but the reaction is completely different. - When Yura's behavior becomes strange and I follow her...Aphrodisiac sex with DQNs! - ? - I was clutching my crotch while crying out.