Proper term in English in a business to business transaction the buyers are called “Clients” not customers.
How do the women in this manga fall in love so easily. Honestly I get red alarms in my head when it comes to spontaneous flirting and I become more cautious, especially someone so persistent. If I don’t know the person and they start flirting, idc if your some beautiful female model, I would not be attracted instead I’ll back away.