It was cute and I liked it.
I don't see anything wrong with falling in love with someone because 'it works.' The guy was lonely and wanted someone to be with him. He thought the cupid was the most beautiful one he ever met. He probably fell in love at first sight. What's wrong with that?
The cupid was moved because he was appreciated for the first time.
It's a cute funny short story for me, at least.
Because the love wasn't shown in the manga. The pace was also too quick. If they turned this into 3/4 chapters then they could develop the characters better and actually show the love. It took them to the very end for the seme to show any attraction to the uke. The uke hated humans but then he agreed to work for that guy right away. Like no, someone who had this much hate wouldn't agree so easily.
Seme isn't a human. Lol.
The lest one just sucked. The character development was too quick and they didn't even fall in love. It was just like
A- You work for me
B)- I love you now, I will fuck you in like 5 seconds and be done.
The end