On The Eve Of Proposing To My Girlfriend, I Indulged In Nakadashi Sex With My Childhood Friend Who Smiles Bewitchingly And Says, "From Tomorrow We Will Have A W Affair.... Tsumugi Akari

I, a humble office worker, was dating my colleague Nao and planned to propose soon—actually, tomorrow. After work that day, while discussing dinner with Nao, I got a call. It was from my childhood friend Tsumugi, who said she lost her wallet and needed help. I lied to Nao, saying a male friend was in trouble, and went to Tsumugi. I took her, soaking wet from the rain, to a hotel, but when I tried to leave, she grabbed my arm and asked me to stay a little longer...