Tanaka Lemon FSDSS-615 lost to her girlfriend's older sister's cute and seductive deep kiss.

I went to a mixer behind my girlfriend's back... There was a really beautiful girl there. A few days later, when I went to my girlfriend's house, I found that the girl from the mixer was there too. My girlfriend's older sister secretly started a French kiss on me. Because of her irresistible technique, I succumbed to the temptation... I became engrossed in passionate embraces and kisses with my girlfriend's older sister, completely forgetting about my girlfriend...