[JUR-139] The night before I proposed to my girlfriend, my playhood friend smiled seductively and said, "From tomorrow, we'll be having a double affair..." and I indulged in creampie sex with her. Tsumugi Akari (Censored)

I'm a humble office worker who's dating my coworker Nao, and I was hoping to propose to her sometime soon, or rather, tomorrow. After work that day, while I was discussing dinner with Nao, I got a call. It was my childhood friend Tsumugi, who said she'd lost her wallet and needed help. I lied to Nao and told her that a male friend was in trouble, and headed to Tsumugi's place. I took Tsumugi, who was completely drunk, back to the hotel, but when I was about to leave, she grabbed my arm and asked me to stay a little longer...