ROYD-164 — My Step Sister Is My Ejaculation Manager!? She Makes Me A Masturbation Addict And Makes Me Cum Inside Her By Making Me Stop Masturbating And Making All The Sperm I've Saved Up Squirt Out. Hiyori Hinata

I masturbate all the time, but my parents remarried and I got a step-sister. She's cute, but she's super punctual, so I can't look her in the eye... She also complains that "You're sloppy because you masturbate too much!" and orders me not to masturbate! I can't stand this! When I lamented, my step-sister said, "I'll help you graduate from masturbating!" and started stroking my dick to control my ejaculation...!?