A drunken, depraved girlfriend at a sex party - Miyuki Arisaka PRED-070

My relationship with Miyuki Arisaka has just reached its one-year anniversary, and I prepared a surprise for her. However, she has to attend a club gathering. I figured students on a tight budget would just have a drink at an izakaya, but she said she was going to her senior's house for an after-party and hung up. It's almost midnight! Wait! Maybe she's trying to surprise me at just the right time...!