Looking for a yaoi manga!!

Sooo.. I dont remember much about it but there is a student(i think) that goes to his family's shop (sex hotel) as the cashier boy but there is a man who ''falls in love'' with the boy and tries sex toys on him.. in the end they do a lot of' 'H' things and the boy falls in love with the man .. Thats all i remember!! Thank you for your help in advance!!