I, Who Was Pulled Out So Many Times By The Gruff Lady At My Part-time Job With All-encouraging Sex That I Could Forget Everything I Didn't Want To Do. Ao Ebisaki

I was suddenly dumped by the girl I was thinking of marrying, and my mind went blank. The one who noticed and spoke to me was my senior at work, Ebisaki-san. She's like a big sister, cheerful, but sometimes startlingly feminine. At first, she just encouraged me, but before I knew it, I was drowning in a physical relationship with Ebisaki-san. Every time we had sex, she cheered me up... and before long, I was completely infatuated with Ebisaki-san.