Miki, who I occasionally meet next door, is always drinking from noon and seems like the epitome of a "bad adult". I have to focus on my part-time job, university, and love life... One day, when I was thinking like that, I got a message from my girlfriend saying she broke up with me when I got home from work! Heartbroken, I left the house and found Miki, who was as drunk as ever... Miki noticed how depressed I was and comforted me. And even though I knew it was wrong, I couldn't help but pour my desires into Miki and her motherly body...